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Finding the Fourth Proportional to 291,732.60, 437,560.02 and 81,352.92

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Solution

The fourth proportional to 291,732.60, 437,560.02 and 81,352.92 is: 122,018.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,732.60 : 437,560.02 = 81,352.92 : x
  2. Step 2: Convert to fraction form
    291,732.60/437,560.02 = 81,352.92/x
  3. Step 3: Cross multiply
    291,732.60x = 437,560.02 × 81,352.92
  4. Step 4: Simplify right side
    291,732.60x = 35,596,785,302.26
  5. Step 5: Solve for x
    x = 35,596,785,302.26/291,732.60
  6. Step 6: Final answer
    x = 122,018.54

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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.