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Finding the Fourth Proportional to 261,773.10, 392,696.78 and 84,238.79

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Solution

The fourth proportional to 261,773.10, 392,696.78 and 84,238.79 is: 126,370.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,773.10 : 392,696.78 = 84,238.79 : x
  2. Step 2: Convert to fraction form
    261,773.10/392,696.78 = 84,238.79/x
  3. Step 3: Cross multiply
    261,773.10x = 392,696.78 × 84,238.79
  4. Step 4: Simplify right side
    261,773.10x = 33,080,299,199.42
  5. Step 5: Solve for x
    x = 33,080,299,199.42/261,773.10
  6. Step 6: Final answer
    x = 126,370.12

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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.