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Finding the Fourth Proportional to 443,463.60, 665,195.40 and 127,930.80

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Solution

The fourth proportional to 443,463.60, 665,195.40 and 127,930.80 is: 191,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,463.60 : 665,195.40 = 127,930.80 : x
  2. Step 2: Convert to fraction form
    443,463.60/665,195.40 = 127,930.80/x
  3. Step 3: Cross multiply
    443,463.60x = 665,195.40 × 127,930.80
  4. Step 4: Simplify right side
    443,463.60x = 85,098,979,678.32
  5. Step 5: Solve for x
    x = 85,098,979,678.32/443,463.60
  6. Step 6: Final answer
    x = 191,896.20

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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.