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Finding the Fourth Proportional to 372,931.20, 514,627.20 and 203,164.80

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Solution

The fourth proportional to 372,931.20, 514,627.20 and 203,164.80 is: 280,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,931.20 : 514,627.20 = 203,164.80 : x
  2. Step 2: Convert to fraction form
    372,931.20/514,627.20 = 203,164.80/x
  3. Step 3: Cross multiply
    372,931.20x = 514,627.20 × 203,164.80
  4. Step 4: Simplify right side
    372,931.20x = 104,554,132,162.56
  5. Step 5: Solve for x
    x = 104,554,132,162.56/372,931.20
  6. Step 6: Final answer
    x = 280,357.70

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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.