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Finding the Fourth Proportional to 331,377.20, 497,065.80 and 82,059.20

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Solution

The fourth proportional to 331,377.20, 497,065.80 and 82,059.20 is: 123,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,377.20 : 497,065.80 = 82,059.20 : x
  2. Step 2: Convert to fraction form
    331,377.20/497,065.80 = 82,059.20/x
  3. Step 3: Cross multiply
    331,377.20x = 497,065.80 × 82,059.20
  4. Step 4: Simplify right side
    331,377.20x = 40,788,821,895.36
  5. Step 5: Solve for x
    x = 40,788,821,895.36/331,377.20
  6. Step 6: Final answer
    x = 123,088.80

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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.