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Finding the Fourth Proportional to 231,397.80, 347,226.30 and 98,255.40

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Solution

The fourth proportional to 231,397.80, 347,226.30 and 98,255.40 is: 147,438.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,397.80 : 347,226.30 = 98,255.40 : x
  2. Step 2: Convert to fraction form
    231,397.80/347,226.30 = 98,255.40/x
  3. Step 3: Cross multiply
    231,397.80x = 347,226.30 × 98,255.40
  4. Step 4: Simplify right side
    231,397.80x = 34,116,858,997.02
  5. Step 5: Solve for x
    x = 34,116,858,997.02/231,397.80
  6. Step 6: Final answer
    x = 147,438.13

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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.