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Finding the Fourth Proportional to 256,187.52, 384,515.66 and 129,914.91

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Solution

The fourth proportional to 256,187.52, 384,515.66 and 129,914.91 is: 194,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,187.52 : 384,515.66 = 129,914.91 : x
  2. Step 2: Convert to fraction form
    256,187.52/384,515.66 = 129,914.91/x
  3. Step 3: Cross multiply
    256,187.52x = 384,515.66 × 129,914.91
  4. Step 4: Simplify right side
    256,187.52x = 49,954,317,687.28
  5. Step 5: Solve for x
    x = 49,954,317,687.28/256,187.52
  6. Step 6: Final answer
    x = 194,991.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.