Home / 287,601.10-431,397.60-129,829.30

Finding the Fourth Proportional to 287,601.10, 431,397.60 and 129,829.30

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Solution

The fourth proportional to 287,601.10, 431,397.60 and 129,829.30 is: 194,742.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,601.10 : 431,397.60 = 129,829.30 : x
  2. Step 2: Convert to fraction form
    287,601.10/431,397.60 = 129,829.30/x
  3. Step 3: Cross multiply
    287,601.10x = 431,397.60 × 129,829.30
  4. Step 4: Simplify right side
    287,601.10x = 56,008,048,429.68
  5. Step 5: Solve for x
    x = 56,008,048,429.68/287,601.10
  6. Step 6: Final answer
    x = 194,742.12

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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.