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Finding the Fourth Proportional to 443,281.12, 664,935.12 and 143,753.44

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Solution

The fourth proportional to 443,281.12, 664,935.12 and 143,753.44 is: 215,634.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,281.12 : 664,935.12 = 143,753.44 : x
  2. Step 2: Convert to fraction form
    443,281.12/664,935.12 = 143,753.44/x
  3. Step 3: Cross multiply
    443,281.12x = 664,935.12 × 143,753.44
  4. Step 4: Simplify right side
    443,281.12x = 95,586,710,876.81
  5. Step 5: Solve for x
    x = 95,586,710,876.81/443,281.12
  6. Step 6: Final answer
    x = 215,634.52

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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.