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Finding the Fourth Proportional to 291,729.92, 437,598.36 and 81,355.04

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Solution

The fourth proportional to 291,729.92, 437,598.36 and 81,355.04 is: 122,033.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,729.92 : 437,598.36 = 81,355.04 : x
  2. Step 2: Convert to fraction form
    291,729.92/437,598.36 = 81,355.04/x
  3. Step 3: Cross multiply
    291,729.92x = 437,598.36 × 81,355.04
  4. Step 4: Simplify right side
    291,729.92x = 35,600,832,081.73
  5. Step 5: Solve for x
    x = 35,600,832,081.73/291,729.92
  6. Step 6: Final answer
    x = 122,033.53

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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.