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Finding the Fourth Proportional to 331,008.15, 496,123.43 and 153,139.44

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Solution

The fourth proportional to 331,008.15, 496,123.43 and 153,139.44 is: 229,529.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,008.15 : 496,123.43 = 153,139.44 : x
  2. Step 2: Convert to fraction form
    331,008.15/496,123.43 = 153,139.44/x
  3. Step 3: Cross multiply
    331,008.15x = 496,123.43 × 153,139.44
  4. Step 4: Simplify right side
    331,008.15x = 75,976,063,475.38
  5. Step 5: Solve for x
    x = 75,976,063,475.38/331,008.15
  6. Step 6: Final answer
    x = 229,529.28

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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.