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Finding the Fourth Proportional to 372,519.20, 558,778.80 and 339,276.80

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Solution

The fourth proportional to 372,519.20, 558,778.80 and 339,276.80 is: 508,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,519.20 : 558,778.80 = 339,276.80 : x
  2. Step 2: Convert to fraction form
    372,519.20/558,778.80 = 339,276.80/x
  3. Step 3: Cross multiply
    372,519.20x = 558,778.80 × 339,276.80
  4. Step 4: Simplify right side
    372,519.20x = 189,580,683,171.84
  5. Step 5: Solve for x
    x = 189,580,683,171.84/372,519.20
  6. Step 6: Final answer
    x = 508,915.20

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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.