Home / 287,517.90-431,360.15-119,007.12

Finding the Fourth Proportional to 287,517.90, 431,360.15 and 119,007.12

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Solution

The fourth proportional to 287,517.90, 431,360.15 and 119,007.12 is: 178,545.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,517.90 : 431,360.15 = 119,007.12 : x
  2. Step 2: Convert to fraction form
    287,517.90/431,360.15 = 119,007.12/x
  3. Step 3: Cross multiply
    287,517.90x = 431,360.15 × 119,007.12
  4. Step 4: Simplify right side
    287,517.90x = 51,334,929,134.27
  5. Step 5: Solve for x
    x = 51,334,929,134.27/287,517.90
  6. Step 6: Final answer
    x = 178,545.16

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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.