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Finding the Fourth Proportional to 261,955.56, 393,005.82 and 104,294.68

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Solution

The fourth proportional to 261,955.56, 393,005.82 and 104,294.68 is: 156,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,955.56 : 393,005.82 = 104,294.68 : x
  2. Step 2: Convert to fraction form
    261,955.56/393,005.82 = 104,294.68/x
  3. Step 3: Cross multiply
    261,955.56x = 393,005.82 × 104,294.68
  4. Step 4: Simplify right side
    261,955.56x = 40,988,416,235.04
  5. Step 5: Solve for x
    x = 40,988,416,235.04/261,955.56
  6. Step 6: Final answer
    x = 156,470.88

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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.