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Finding the Fourth Proportional to 260,405.73, 359,386.71 and 158,438.43

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Solution

The fourth proportional to 260,405.73, 359,386.71 and 158,438.43 is: 218,661.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,405.73 : 359,386.71 = 158,438.43 : x
  2. Step 2: Convert to fraction form
    260,405.73/359,386.71 = 158,438.43/x
  3. Step 3: Cross multiply
    260,405.73x = 359,386.71 × 158,438.43
  4. Step 4: Simplify right side
    260,405.73x = 56,940,666,095.27
  5. Step 5: Solve for x
    x = 56,940,666,095.27/260,405.73
  6. Step 6: Final answer
    x = 218,661.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.