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Finding the Fourth Proportional to 288,779.82, 433,141.17 and 89,046.30

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Solution

The fourth proportional to 288,779.82, 433,141.17 and 89,046.30 is: 133,560.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,779.82 : 433,141.17 = 89,046.30 : x
  2. Step 2: Convert to fraction form
    288,779.82/433,141.17 = 89,046.30/x
  3. Step 3: Cross multiply
    288,779.82x = 433,141.17 × 89,046.30
  4. Step 4: Simplify right side
    288,779.82x = 38,569,618,566.17
  5. Step 5: Solve for x
    x = 38,569,618,566.17/288,779.82
  6. Step 6: Final answer
    x = 133,560.64

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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.