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Finding the Fourth Proportional to 288,420.92, 432,472.82 and 88,685.85

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Solution

The fourth proportional to 288,420.92, 432,472.82 and 88,685.85 is: 132,980.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,420.92 : 432,472.82 = 88,685.85 : x
  2. Step 2: Convert to fraction form
    288,420.92/432,472.82 = 88,685.85/x
  3. Step 3: Cross multiply
    288,420.92x = 432,472.82 × 88,685.85
  4. Step 4: Simplify right side
    288,420.92x = 38,354,219,200.17
  5. Step 5: Solve for x
    x = 38,354,219,200.17/288,420.92
  6. Step 6: Final answer
    x = 132,980.02

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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.