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Finding the Fourth Proportional to 256,680.90, 354,201.66 and 149,243.31

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Solution

The fourth proportional to 256,680.90, 354,201.66 and 149,243.31 is: 205,945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,680.90 : 354,201.66 = 149,243.31 : x
  2. Step 2: Convert to fraction form
    256,680.90/354,201.66 = 149,243.31/x
  3. Step 3: Cross multiply
    256,680.90x = 354,201.66 × 149,243.31
  4. Step 4: Simplify right side
    256,680.90x = 52,862,228,145.89
  5. Step 5: Solve for x
    x = 52,862,228,145.89/256,680.90
  6. Step 6: Final answer
    x = 205,945.31

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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.