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Finding the Fourth Proportional to 355,442.60, 532,127.10 and 318,117.80

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Solution

The fourth proportional to 355,442.60, 532,127.10 and 318,117.80 is: 476,248.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,442.60 : 532,127.10 = 318,117.80 : x
  2. Step 2: Convert to fraction form
    355,442.60/532,127.10 = 318,117.80/x
  3. Step 3: Cross multiply
    355,442.60x = 532,127.10 × 318,117.80
  4. Step 4: Simplify right side
    355,442.60x = 169,279,102,372.38
  5. Step 5: Solve for x
    x = 169,279,102,372.38/355,442.60
  6. Step 6: Final answer
    x = 476,248.77

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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.