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Finding the Fourth Proportional to 261,013.70, 391,520.55 and 160,849.10

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Solution

The fourth proportional to 261,013.70, 391,520.55 and 160,849.10 is: 241,273.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,013.70 : 391,520.55 = 160,849.10 : x
  2. Step 2: Convert to fraction form
    261,013.70/391,520.55 = 160,849.10/x
  3. Step 3: Cross multiply
    261,013.70x = 391,520.55 × 160,849.10
  4. Step 4: Simplify right side
    261,013.70x = 62,975,728,099.01
  5. Step 5: Solve for x
    x = 62,975,728,099.01/261,013.70
  6. Step 6: Final answer
    x = 241,273.65

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1.5x scale

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.