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Finding the Fourth Proportional to 309,959.40, 464,939.10 and 88,314.60

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Solution

The fourth proportional to 309,959.40, 464,939.10 and 88,314.60 is: 132,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,959.40 : 464,939.10 = 88,314.60 : x
  2. Step 2: Convert to fraction form
    309,959.40/464,939.10 = 88,314.60/x
  3. Step 3: Cross multiply
    309,959.40x = 464,939.10 × 88,314.60
  4. Step 4: Simplify right side
    309,959.40x = 41,060,910,640.86
  5. Step 5: Solve for x
    x = 41,060,910,640.86/309,959.40
  6. Step 6: Final answer
    x = 132,471.90

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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.