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Finding the Fourth Proportional to 355,343.22, 532,975.59 and 89,103.78

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Solution

The fourth proportional to 355,343.22, 532,975.59 and 89,103.78 is: 133,645.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,343.22 : 532,975.59 = 89,103.78 : x
  2. Step 2: Convert to fraction form
    355,343.22/532,975.59 = 89,103.78/x
  3. Step 3: Cross multiply
    355,343.22x = 532,975.59 × 89,103.78
  4. Step 4: Simplify right side
    355,343.22x = 47,490,139,716.73
  5. Step 5: Solve for x
    x = 47,490,139,716.73/355,343.22
  6. Step 6: Final answer
    x = 133,645.83

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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.