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Finding the Fourth Proportional to 312,080.19, 468,120.36 and 75,422.85

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Solution

The fourth proportional to 312,080.19, 468,120.36 and 75,422.85 is: 113,134.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,080.19 : 468,120.36 = 75,422.85 : x
  2. Step 2: Convert to fraction form
    312,080.19/468,120.36 = 75,422.85/x
  3. Step 3: Cross multiply
    312,080.19x = 468,120.36 × 75,422.85
  4. Step 4: Simplify right side
    312,080.19x = 35,306,970,221.61
  5. Step 5: Solve for x
    x = 35,306,970,221.61/312,080.19
  6. Step 6: Final answer
    x = 113,134.29

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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.