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Finding the Fourth Proportional to 372,472.80, 558,320.40 and 203,733.60

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Solution

The fourth proportional to 372,472.80, 558,320.40 and 203,733.60 is: 305,387.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,472.80 : 558,320.40 = 203,733.60 : x
  2. Step 2: Convert to fraction form
    372,472.80/558,320.40 = 203,733.60/x
  3. Step 3: Cross multiply
    372,472.80x = 558,320.40 × 203,733.60
  4. Step 4: Simplify right side
    372,472.80x = 113,748,625,045.44
  5. Step 5: Solve for x
    x = 113,748,625,045.44/372,472.80
  6. Step 6: Final answer
    x = 305,387.74

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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.