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Finding the Fourth Proportional to 256,889.48, 354,499.47 and 142,161.21

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Solution

The fourth proportional to 256,889.48, 354,499.47 and 142,161.21 is: 196,178.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,889.48 : 354,499.47 = 142,161.21 : x
  2. Step 2: Convert to fraction form
    256,889.48/354,499.47 = 142,161.21/x
  3. Step 3: Cross multiply
    256,889.48x = 354,499.47 × 142,161.21
  4. Step 4: Simplify right side
    256,889.48x = 50,396,073,599.56
  5. Step 5: Solve for x
    x = 50,396,073,599.56/256,889.48
  6. Step 6: Final answer
    x = 196,178.04

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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.