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Finding the Fourth Proportional to 261,468.44, 392,151.01 and 71,879.89

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Solution

The fourth proportional to 261,468.44, 392,151.01 and 71,879.89 is: 107,805.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,468.44 : 392,151.01 = 71,879.89 : x
  2. Step 2: Convert to fraction form
    261,468.44/392,151.01 = 71,879.89/x
  3. Step 3: Cross multiply
    261,468.44x = 392,151.01 × 71,879.89
  4. Step 4: Simplify right side
    261,468.44x = 28,187,771,462.19
  5. Step 5: Solve for x
    x = 28,187,771,462.19/261,468.44
  6. Step 6: Final answer
    x = 107,805.64

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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.