Home / 256,830.70-385,246.05-172,849.90

Finding the Fourth Proportional to 256,830.70, 385,246.05 and 172,849.90

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Solution

The fourth proportional to 256,830.70, 385,246.05 and 172,849.90 is: 259,274.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,830.70 : 385,246.05 = 172,849.90 : x
  2. Step 2: Convert to fraction form
    256,830.70/385,246.05 = 172,849.90/x
  3. Step 3: Cross multiply
    256,830.70x = 385,246.05 × 172,849.90
  4. Step 4: Simplify right side
    256,830.70x = 66,589,741,217.90
  5. Step 5: Solve for x
    x = 66,589,741,217.90/256,830.70
  6. Step 6: Final answer
    x = 259,274.85

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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.