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Finding the Fourth Proportional to 204,248.60, 306,186.12 and 85,928.28

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Solution

The fourth proportional to 204,248.60, 306,186.12 and 85,928.28 is: 128,813.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,248.60 : 306,186.12 = 85,928.28 : x
  2. Step 2: Convert to fraction form
    204,248.60/306,186.12 = 85,928.28/x
  3. Step 3: Cross multiply
    204,248.60x = 306,186.12 × 85,928.28
  4. Step 4: Simplify right side
    204,248.60x = 26,310,046,651.47
  5. Step 5: Solve for x
    x = 26,310,046,651.47/204,248.60
  6. Step 6: Final answer
    x = 128,813.84

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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.