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Finding the Fourth Proportional to 291,585.60, 437,572.80 and 133,732.80

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Solution

The fourth proportional to 291,585.60, 437,572.80 and 133,732.80 is: 200,688.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,585.60 : 437,572.80 = 133,732.80 : x
  2. Step 2: Convert to fraction form
    291,585.60/437,572.80 = 133,732.80/x
  3. Step 3: Cross multiply
    291,585.60x = 437,572.80 × 133,732.80
  4. Step 4: Simplify right side
    291,585.60x = 58,517,835,747.84
  5. Step 5: Solve for x
    x = 58,517,835,747.84/291,585.60
  6. Step 6: Final answer
    x = 200,688.36

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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.