Home / 256,822.20-385,233.30-172,841.40

Finding the Fourth Proportional to 256,822.20, 385,233.30 and 172,841.40

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Solution

The fourth proportional to 256,822.20, 385,233.30 and 172,841.40 is: 259,262.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,822.20 : 385,233.30 = 172,841.40 : x
  2. Step 2: Convert to fraction form
    256,822.20/385,233.30 = 172,841.40/x
  3. Step 3: Cross multiply
    256,822.20x = 385,233.30 × 172,841.40
  4. Step 4: Simplify right side
    256,822.20x = 66,584,262,898.62
  5. Step 5: Solve for x
    x = 66,584,262,898.62/256,822.20
  6. Step 6: Final answer
    x = 259,262.10

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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.