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Finding the Fourth Proportional to 291,691.92, 437,602.08 and 89,289.63

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Solution

The fourth proportional to 291,691.92, 437,602.08 and 89,289.63 is: 133,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,691.92 : 437,602.08 = 89,289.63 : x
  2. Step 2: Convert to fraction form
    291,691.92/437,602.08 = 89,289.63/x
  3. Step 3: Cross multiply
    291,691.92x = 437,602.08 × 89,289.63
  4. Step 4: Simplify right side
    291,691.92x = 39,073,327,810.43
  5. Step 5: Solve for x
    x = 39,073,327,810.43/291,691.92
  6. Step 6: Final answer
    x = 133,954.10

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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.