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Finding the Fourth Proportional to 256,790.95, 354,381.95 and 142,067.61

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Solution

The fourth proportional to 256,790.95, 354,381.95 and 142,067.61 is: 196,059.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,790.95 : 354,381.95 = 142,067.61 : x
  2. Step 2: Convert to fraction form
    256,790.95/354,381.95 = 142,067.61/x
  3. Step 3: Cross multiply
    256,790.95x = 354,381.95 × 142,067.61
  4. Step 4: Simplify right side
    256,790.95x = 50,346,196,663.64
  5. Step 5: Solve for x
    x = 50,346,196,663.64/256,790.95
  6. Step 6: Final answer
    x = 196,059.08

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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.