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Finding the Fourth Proportional to 419,988.68, 579,593.94 and 238,672.04

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Solution

The fourth proportional to 419,988.68, 579,593.94 and 238,672.04 is: 329,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,988.68 : 579,593.94 = 238,672.04 : x
  2. Step 2: Convert to fraction form
    419,988.68/579,593.94 = 238,672.04/x
  3. Step 3: Cross multiply
    419,988.68x = 579,593.94 × 238,672.04
  4. Step 4: Simplify right side
    419,988.68x = 138,332,868,031.44
  5. Step 5: Solve for x
    x = 138,332,868,031.44/419,988.68
  6. Step 6: Final answer
    x = 329,372.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.