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Finding the Fourth Proportional to 312,861.80, 469,251.06 and 88,240.28

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Solution

The fourth proportional to 312,861.80, 469,251.06 and 88,240.28 is: 132,348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,861.80 : 469,251.06 = 88,240.28 : x
  2. Step 2: Convert to fraction form
    312,861.80/469,251.06 = 88,240.28/x
  3. Step 3: Cross multiply
    312,861.80x = 469,251.06 × 88,240.28
  4. Step 4: Simplify right side
    312,861.80x = 41,406,844,924.70
  5. Step 5: Solve for x
    x = 41,406,844,924.70/312,861.80
  6. Step 6: Final answer
    x = 132,348.68

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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.