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Finding the Fourth Proportional to 667,166.52, 920,688.44 and 361,243.20

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Solution

The fourth proportional to 667,166.52, 920,688.44 and 361,243.20 is: 498,514.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,166.52 : 920,688.44 = 361,243.20 : x
  2. Step 2: Convert to fraction form
    667,166.52/920,688.44 = 361,243.20/x
  3. Step 3: Cross multiply
    667,166.52x = 920,688.44 × 361,243.20
  4. Step 4: Simplify right side
    667,166.52x = 332,592,438,268.61
  5. Step 5: Solve for x
    x = 332,592,438,268.61/667,166.52
  6. Step 6: Final answer
    x = 498,514.88

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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.