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Finding the Fourth Proportional to 256,755.26, 354,371.28 and 172,020.08

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Solution

The fourth proportional to 256,755.26, 354,371.28 and 172,020.08 is: 237,420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,755.26 : 354,371.28 = 172,020.08 : x
  2. Step 2: Convert to fraction form
    256,755.26/354,371.28 = 172,020.08/x
  3. Step 3: Cross multiply
    256,755.26x = 354,371.28 × 172,020.08
  4. Step 4: Simplify right side
    256,755.26x = 60,958,975,935.30
  5. Step 5: Solve for x
    x = 60,958,975,935.30/256,755.26
  6. Step 6: Final answer
    x = 237,420.55

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1.5x scale

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.