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Finding the Fourth Proportional to 312,143.80, 468,204.72 and 87,502.44

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Solution

The fourth proportional to 312,143.80, 468,204.72 and 87,502.44 is: 131,250.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,143.80 : 468,204.72 = 87,502.44 : x
  2. Step 2: Convert to fraction form
    312,143.80/468,204.72 = 87,502.44/x
  3. Step 3: Cross multiply
    312,143.80x = 468,204.72 × 87,502.44
  4. Step 4: Simplify right side
    312,143.80x = 40,969,055,419.52
  5. Step 5: Solve for x
    x = 40,969,055,419.52/312,143.80
  6. Step 6: Final answer
    x = 131,250.58

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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.