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Finding the Fourth Proportional to 372,889.68, 514,600.20 and 203,139.60

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Solution

The fourth proportional to 372,889.68, 514,600.20 and 203,139.60 is: 280,339.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,889.68 : 514,600.20 = 203,139.60 : x
  2. Step 2: Convert to fraction form
    372,889.68/514,600.20 = 203,139.60/x
  3. Step 3: Cross multiply
    372,889.68x = 514,600.20 × 203,139.60
  4. Step 4: Simplify right side
    372,889.68x = 104,535,678,787.92
  5. Step 5: Solve for x
    x = 104,535,678,787.92/372,889.68
  6. Step 6: Final answer
    x = 280,339.43

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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.