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Finding the Fourth Proportional to 256,767, 354,331.80 and 142,049.88

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Solution

The fourth proportional to 256,767, 354,331.80 and 142,049.88 is: 196,025.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,767 : 354,331.80 = 142,049.88 : x
  2. Step 2: Convert to fraction form
    256,767/354,331.80 = 142,049.88/x
  3. Step 3: Cross multiply
    256,767x = 354,331.80 × 142,049.88
  4. Step 4: Simplify right side
    256,767x = 50,332,789,670.18
  5. Step 5: Solve for x
    x = 50,332,789,670.18/256,767
  6. Step 6: Final answer
    x = 196,025.15

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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.