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Finding the Fourth Proportional to 259,943,386,237.40, 389,915,079,356.10 and 259,943,386,237.40

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Solution

The fourth proportional to 259,943,386,237.40, 389,915,079,356.10 and 259,943,386,237.40 is: 389,915,079,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,943,386,237.40 : 389,915,079,356.10 = 259,943,386,237.40 : x
  2. Step 2: Convert to fraction form
    259,943,386,237.40/389,915,079,356.10 = 259,943,386,237.40/x
  3. Step 3: Cross multiply
    259,943,386,237.40x = 389,915,079,356.10 × 259,943,386,237.40
  4. Step 4: Simplify right side
    259,943,386,237.40x = 101,355,846,072,849,158,635,520
  5. Step 5: Solve for x
    x = 101,355,846,072,849,158,635,520/259,943,386,237.40
  6. Step 6: Final answer
    x = 389,915,079,356.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.