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Finding the Fourth Proportional to 610,641.47, 915,964.55 and 255,406.29

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Solution

The fourth proportional to 610,641.47, 915,964.55 and 255,406.29 is: 383,110.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,641.47 : 915,964.55 = 255,406.29 : x
  2. Step 2: Convert to fraction form
    610,641.47/915,964.55 = 255,406.29/x
  3. Step 3: Cross multiply
    610,641.47x = 915,964.55 × 255,406.29
  4. Step 4: Simplify right side
    610,641.47x = 233,943,106,209.99
  5. Step 5: Solve for x
    x = 233,943,106,209.99/610,641.47
  6. Step 6: Final answer
    x = 383,110.42

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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.