Home / 318,781.08-439,917.86-175,540.78

Finding the Fourth Proportional to 318,781.08, 439,917.86 and 175,540.78

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Solution

The fourth proportional to 318,781.08, 439,917.86 and 175,540.78 is: 242,246.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,781.08 : 439,917.86 = 175,540.78 : x
  2. Step 2: Convert to fraction form
    318,781.08/439,917.86 = 175,540.78/x
  3. Step 3: Cross multiply
    318,781.08x = 439,917.86 × 175,540.78
  4. Step 4: Simplify right side
    318,781.08x = 77,223,524,280.33
  5. Step 5: Solve for x
    x = 77,223,524,280.33/318,781.08
  6. Step 6: Final answer
    x = 242,246.26

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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.