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Finding the Fourth Proportional to 394,959.40, 592,439.10 and 253,241.80

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Solution

The fourth proportional to 394,959.40, 592,439.10 and 253,241.80 is: 379,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,959.40 : 592,439.10 = 253,241.80 : x
  2. Step 2: Convert to fraction form
    394,959.40/592,439.10 = 253,241.80/x
  3. Step 3: Cross multiply
    394,959.40x = 592,439.10 × 253,241.80
  4. Step 4: Simplify right side
    394,959.40x = 150,030,344,074.38
  5. Step 5: Solve for x
    x = 150,030,344,074.38/394,959.40
  6. Step 6: Final answer
    x = 379,862.70

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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.