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Finding the Fourth Proportional to 256,079.71, 353,409.58 and 141,380.47

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Solution

The fourth proportional to 256,079.71, 353,409.58 and 141,380.47 is: 195,115.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,079.71 : 353,409.58 = 141,380.47 : x
  2. Step 2: Convert to fraction form
    256,079.71/353,409.58 = 141,380.47/x
  3. Step 3: Cross multiply
    256,079.71x = 353,409.58 × 141,380.47
  4. Step 4: Simplify right side
    256,079.71x = 49,965,213,141.39
  5. Step 5: Solve for x
    x = 49,965,213,141.39/256,079.71
  6. Step 6: Final answer
    x = 195,115.86

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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.