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Finding the Fourth Proportional to 261,718.88, 361,162.95 and 159,914.75

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Solution

The fourth proportional to 261,718.88, 361,162.95 and 159,914.75 is: 220,676.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,718.88 : 361,162.95 = 159,914.75 : x
  2. Step 2: Convert to fraction form
    261,718.88/361,162.95 = 159,914.75/x
  3. Step 3: Cross multiply
    261,718.88x = 361,162.95 × 159,914.75
  4. Step 4: Simplify right side
    261,718.88x = 57,755,281,052.70
  5. Step 5: Solve for x
    x = 57,755,281,052.70/261,718.88
  6. Step 6: Final answer
    x = 220,676.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.