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Finding the Fourth Proportional to 319,010.38, 478,517.38 and 82,336.88

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Solution

The fourth proportional to 319,010.38, 478,517.38 and 82,336.88 is: 123,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,010.38 : 478,517.38 = 82,336.88 : x
  2. Step 2: Convert to fraction form
    319,010.38/478,517.38 = 82,336.88/x
  3. Step 3: Cross multiply
    319,010.38x = 478,517.38 × 82,336.88
  4. Step 4: Simplify right side
    319,010.38x = 39,399,628,094.97
  5. Step 5: Solve for x
    x = 39,399,628,094.97/319,010.38
  6. Step 6: Final answer
    x = 123,505.79

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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.