Home / 287,569.10-431,349.60-129,797.30

Finding the Fourth Proportional to 287,569.10, 431,349.60 and 129,797.30

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Solution

The fourth proportional to 287,569.10, 431,349.60 and 129,797.30 is: 194,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,569.10 : 431,349.60 = 129,797.30 : x
  2. Step 2: Convert to fraction form
    287,569.10/431,349.60 = 129,797.30/x
  3. Step 3: Cross multiply
    287,569.10x = 431,349.60 × 129,797.30
  4. Step 4: Simplify right side
    287,569.10x = 55,988,013,436.08
  5. Step 5: Solve for x
    x = 55,988,013,436.08/287,569.10
  6. Step 6: Final answer
    x = 194,694.12

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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.