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Finding the Fourth Proportional to 355,419.70, 533,132.28 and 89,181.61

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Solution

The fourth proportional to 355,419.70, 533,132.28 and 89,181.61 is: 133,773.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,419.70 : 533,132.28 = 89,181.61 : x
  2. Step 2: Convert to fraction form
    355,419.70/533,132.28 = 89,181.61/x
  3. Step 3: Cross multiply
    355,419.70x = 533,132.28 × 89,181.61
  4. Step 4: Simplify right side
    355,419.70x = 47,545,593,740.54
  5. Step 5: Solve for x
    x = 47,545,593,740.54/355,419.70
  6. Step 6: Final answer
    x = 133,773.10

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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.