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Finding the Fourth Proportional to 372,912.18, 514,634.49 and 203,155.62

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Solution

The fourth proportional to 372,912.18, 514,634.49 and 203,155.62 is: 280,363.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,912.18 : 514,634.49 = 203,155.62 : x
  2. Step 2: Convert to fraction form
    372,912.18/514,634.49 = 203,155.62/x
  3. Step 3: Cross multiply
    372,912.18x = 514,634.49 × 203,155.62
  4. Step 4: Simplify right side
    372,912.18x = 104,550,888,889.33
  5. Step 5: Solve for x
    x = 104,550,888,889.33/372,912.18
  6. Step 6: Final answer
    x = 280,363.30

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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.