Home / 256,839.40-385,259.10-178,042.60

Finding the Fourth Proportional to 256,839.40, 385,259.10 and 178,042.60

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Solution

The fourth proportional to 256,839.40, 385,259.10 and 178,042.60 is: 267,063.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,839.40 : 385,259.10 = 178,042.60 : x
  2. Step 2: Convert to fraction form
    256,839.40/385,259.10 = 178,042.60/x
  3. Step 3: Cross multiply
    256,839.40x = 385,259.10 × 178,042.60
  4. Step 4: Simplify right side
    256,839.40x = 68,592,531,837.66
  5. Step 5: Solve for x
    x = 68,592,531,837.66/256,839.40
  6. Step 6: Final answer
    x = 267,063.90

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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.