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Finding the Fourth Proportional to 231,990.10, 347,819.10 and 89,713.60

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Solution

The fourth proportional to 231,990.10, 347,819.10 and 89,713.60 is: 134,506.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,990.10 : 347,819.10 = 89,713.60 : x
  2. Step 2: Convert to fraction form
    231,990.10/347,819.10 = 89,713.60/x
  3. Step 3: Cross multiply
    231,990.10x = 347,819.10 × 89,713.60
  4. Step 4: Simplify right side
    231,990.10x = 31,204,103,609.76
  5. Step 5: Solve for x
    x = 31,204,103,609.76/231,990.10
  6. Step 6: Final answer
    x = 134,506.19

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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.