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Finding the Fourth Proportional to 317,142.23, 475,710.59 and 80,481.48

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Solution

The fourth proportional to 317,142.23, 475,710.59 and 80,481.48 is: 120,721.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,142.23 : 475,710.59 = 80,481.48 : x
  2. Step 2: Convert to fraction form
    317,142.23/475,710.59 = 80,481.48/x
  3. Step 3: Cross multiply
    317,142.23x = 475,710.59 × 80,481.48
  4. Step 4: Simplify right side
    317,142.23x = 38,285,891,932.47
  5. Step 5: Solve for x
    x = 38,285,891,932.47/317,142.23
  6. Step 6: Final answer
    x = 120,721.52

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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.