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Finding the Fourth Proportional to 261,384.61, 392,117.91 and 111,625.69

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Solution

The fourth proportional to 261,384.61, 392,117.91 and 111,625.69 is: 167,456.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,384.61 : 392,117.91 = 111,625.69 : x
  2. Step 2: Convert to fraction form
    261,384.61/392,117.91 = 111,625.69/x
  3. Step 3: Cross multiply
    261,384.61x = 392,117.91 × 111,625.69
  4. Step 4: Simplify right side
    261,384.61x = 43,770,430,304.52
  5. Step 5: Solve for x
    x = 43,770,430,304.52/261,384.61
  6. Step 6: Final answer
    x = 167,456.04

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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.