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Finding the Fourth Proportional to 443,614.16, 665,178.20 and 218,479.52

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Solution

The fourth proportional to 443,614.16, 665,178.20 and 218,479.52 is: 327,599.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,614.16 : 665,178.20 = 218,479.52 : x
  2. Step 2: Convert to fraction form
    443,614.16/665,178.20 = 218,479.52/x
  3. Step 3: Cross multiply
    443,614.16x = 665,178.20 × 218,479.52
  4. Step 4: Simplify right side
    443,614.16x = 145,327,813,850.46
  5. Step 5: Solve for x
    x = 145,327,813,850.46/443,614.16
  6. Step 6: Final answer
    x = 327,599.58

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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.