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Finding the Fourth Proportional to 256,118.40, 384,177.60 and 89,923.20

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Solution

The fourth proportional to 256,118.40, 384,177.60 and 89,923.20 is: 134,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,118.40 : 384,177.60 = 89,923.20 : x
  2. Step 2: Convert to fraction form
    256,118.40/384,177.60 = 89,923.20/x
  3. Step 3: Cross multiply
    256,118.40x = 384,177.60 × 89,923.20
  4. Step 4: Simplify right side
    256,118.40x = 34,546,479,160.32
  5. Step 5: Solve for x
    x = 34,546,479,160.32/256,118.40
  6. Step 6: Final answer
    x = 134,884.80

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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.