Home / 261,815.78-361,344.85-159,899.85

Finding the Fourth Proportional to 261,815.78, 361,344.85 and 159,899.85

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Solution

The fourth proportional to 261,815.78, 361,344.85 and 159,899.85 is: 220,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,815.78 : 361,344.85 = 159,899.85 : x
  2. Step 2: Convert to fraction form
    261,815.78/361,344.85 = 159,899.85/x
  3. Step 3: Cross multiply
    261,815.78x = 361,344.85 × 159,899.85
  4. Step 4: Simplify right side
    261,815.78x = 57,778,986,913.52
  5. Step 5: Solve for x
    x = 57,778,986,913.52/261,815.78
  6. Step 6: Final answer
    x = 220,685.65

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1.5x scale

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.