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Finding the Fourth Proportional to 288,068.60, 432,167.70 and 88,398.20

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Solution

The fourth proportional to 288,068.60, 432,167.70 and 88,398.20 is: 132,617.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,068.60 : 432,167.70 = 88,398.20 : x
  2. Step 2: Convert to fraction form
    288,068.60/432,167.70 = 88,398.20/x
  3. Step 3: Cross multiply
    288,068.60x = 432,167.70 × 88,398.20
  4. Step 4: Simplify right side
    288,068.60x = 38,202,846,778.14
  5. Step 5: Solve for x
    x = 38,202,846,778.14/288,068.60
  6. Step 6: Final answer
    x = 132,617.18

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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.