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Finding the Fourth Proportional to 231,940.87, 347,870.19 and 105,551.71

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Solution

The fourth proportional to 231,940.87, 347,870.19 and 105,551.71 is: 158,308.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,940.87 : 347,870.19 = 105,551.71 : x
  2. Step 2: Convert to fraction form
    231,940.87/347,870.19 = 105,551.71/x
  3. Step 3: Cross multiply
    231,940.87x = 347,870.19 × 105,551.71
  4. Step 4: Simplify right side
    231,940.87x = 36,718,292,938.67
  5. Step 5: Solve for x
    x = 36,718,292,938.67/231,940.87
  6. Step 6: Final answer
    x = 158,308.85

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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.