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Finding the Fourth Proportional to 331,539.40, 497,373.90 and 131,825.80

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Solution

The fourth proportional to 331,539.40, 497,373.90 and 131,825.80 is: 197,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,539.40 : 497,373.90 = 131,825.80 : x
  2. Step 2: Convert to fraction form
    331,539.40/497,373.90 = 131,825.80/x
  3. Step 3: Cross multiply
    331,539.40x = 497,373.90 × 131,825.80
  4. Step 4: Simplify right side
    331,539.40x = 65,566,712,266.62
  5. Step 5: Solve for x
    x = 65,566,712,266.62/331,539.40
  6. Step 6: Final answer
    x = 197,764.47

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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.