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Finding the Fourth Proportional to 331,649.88, 497,474.80 and 82,331.88

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Solution

The fourth proportional to 331,649.88, 497,474.80 and 82,331.88 is: 123,497.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,649.88 : 497,474.80 = 82,331.88 : x
  2. Step 2: Convert to fraction form
    331,649.88/497,474.80 = 82,331.88/x
  3. Step 3: Cross multiply
    331,649.88x = 497,474.80 × 82,331.88
  4. Step 4: Simplify right side
    331,649.88x = 40,958,035,536.62
  5. Step 5: Solve for x
    x = 40,958,035,536.62/331,649.88
  6. Step 6: Final answer
    x = 123,497.82

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1.5x scale

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.