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Finding the Fourth Proportional to 231,690.70, 347,568.45 and 98,569.90

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Solution

The fourth proportional to 231,690.70, 347,568.45 and 98,569.90 is: 147,868.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,690.70 : 347,568.45 = 98,569.90 : x
  2. Step 2: Convert to fraction form
    231,690.70/347,568.45 = 98,569.90/x
  3. Step 3: Cross multiply
    231,690.70x = 347,568.45 × 98,569.90
  4. Step 4: Simplify right side
    231,690.70x = 34,259,787,359.66
  5. Step 5: Solve for x
    x = 34,259,787,359.66/231,690.70
  6. Step 6: Final answer
    x = 147,868.63

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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.