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Finding the Fourth Proportional to 331,488.40, 497,232.60 and 205,517.20

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Solution

The fourth proportional to 331,488.40, 497,232.60 and 205,517.20 is: 308,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,488.40 : 497,232.60 = 205,517.20 : x
  2. Step 2: Convert to fraction form
    331,488.40/497,232.60 = 205,517.20/x
  3. Step 3: Cross multiply
    331,488.40x = 497,232.60 × 205,517.20
  4. Step 4: Simplify right side
    331,488.40x = 102,189,851,700.72
  5. Step 5: Solve for x
    x = 102,189,851,700.72/331,488.40
  6. Step 6: Final answer
    x = 308,275.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.