Home / 279,834.75-386,062.12-172,217.94

Finding the Fourth Proportional to 279,834.75, 386,062.12 and 172,217.94

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Solution

The fourth proportional to 279,834.75, 386,062.12 and 172,217.94 is: 237,593.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,834.75 : 386,062.12 = 172,217.94 : x
  2. Step 2: Convert to fraction form
    279,834.75/386,062.12 = 172,217.94/x
  3. Step 3: Cross multiply
    279,834.75x = 386,062.12 × 172,217.94
  4. Step 4: Simplify right side
    279,834.75x = 66,486,823,018.43
  5. Step 5: Solve for x
    x = 66,486,823,018.43/279,834.75
  6. Step 6: Final answer
    x = 237,593.16

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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.