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Finding the Fourth Proportional to 372,979.20, 514,717.20 and 203,213.28

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Solution

The fourth proportional to 372,979.20, 514,717.20 and 203,213.28 is: 280,437.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,979.20 : 514,717.20 = 203,213.28 : x
  2. Step 2: Convert to fraction form
    372,979.20/514,717.20 = 203,213.28/x
  3. Step 3: Cross multiply
    372,979.20x = 514,717.20 × 203,213.28
  4. Step 4: Simplify right side
    372,979.20x = 104,597,370,484.42
  5. Step 5: Solve for x
    x = 104,597,370,484.42/372,979.20
  6. Step 6: Final answer
    x = 280,437.54

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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.