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Finding the Fourth Proportional to 331,918.96, 497,880 and 82,600.96

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Solution

The fourth proportional to 331,918.96, 497,880 and 82,600.96 is: 123,901.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,918.96 : 497,880 = 82,600.96 : x
  2. Step 2: Convert to fraction form
    331,918.96/497,880 = 82,600.96/x
  3. Step 3: Cross multiply
    331,918.96x = 497,880 × 82,600.96
  4. Step 4: Simplify right side
    331,918.96x = 41,125,365,964.80
  5. Step 5: Solve for x
    x = 41,125,365,964.80/331,918.96
  6. Step 6: Final answer
    x = 123,901.83

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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.