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Finding the Fourth Proportional to 319,687.85, 479,610.70 and 95,047.31

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Solution

The fourth proportional to 319,687.85, 479,610.70 and 95,047.31 is: 142,594.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,687.85 : 479,610.70 = 95,047.31 : x
  2. Step 2: Convert to fraction form
    319,687.85/479,610.70 = 95,047.31/x
  3. Step 3: Cross multiply
    319,687.85x = 479,610.70 × 95,047.31
  4. Step 4: Simplify right side
    319,687.85x = 45,585,706,882.22
  5. Step 5: Solve for x
    x = 45,585,706,882.22/319,687.85
  6. Step 6: Final answer
    x = 142,594.43

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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.