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Finding the Fourth Proportional to 312,481.04, 468,710.76 and 87,843.20

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Solution

The fourth proportional to 312,481.04, 468,710.76 and 87,843.20 is: 131,761.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,481.04 : 468,710.76 = 87,843.20 : x
  2. Step 2: Convert to fraction form
    312,481.04/468,710.76 = 87,843.20/x
  3. Step 3: Cross multiply
    312,481.04x = 468,710.76 × 87,843.20
  4. Step 4: Simplify right side
    312,481.04x = 41,173,053,032.83
  5. Step 5: Solve for x
    x = 41,173,053,032.83/312,481.04
  6. Step 6: Final answer
    x = 131,761.76

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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.