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Finding the Fourth Proportional to 331,344.70, 497,405.85 and 329,011.90

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Solution

The fourth proportional to 331,344.70, 497,405.85 and 329,011.90 is: 493,903.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,344.70 : 497,405.85 = 329,011.90 : x
  2. Step 2: Convert to fraction form
    331,344.70/497,405.85 = 329,011.90/x
  3. Step 3: Cross multiply
    331,344.70x = 497,405.85 × 329,011.90
  4. Step 4: Simplify right side
    331,344.70x = 163,652,443,779.62
  5. Step 5: Solve for x
    x = 163,652,443,779.62/331,344.70
  6. Step 6: Final answer
    x = 493,903.91

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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.