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Finding the Fourth Proportional to 223,407.60, 335,046.60 and 81,236.40

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Solution

The fourth proportional to 223,407.60, 335,046.60 and 81,236.40 is: 121,831.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,407.60 : 335,046.60 = 81,236.40 : x
  2. Step 2: Convert to fraction form
    223,407.60/335,046.60 = 81,236.40/x
  3. Step 3: Cross multiply
    223,407.60x = 335,046.60 × 81,236.40
  4. Step 4: Simplify right side
    223,407.60x = 27,217,979,616.24
  5. Step 5: Solve for x
    x = 27,217,979,616.24/223,407.60
  6. Step 6: Final answer
    x = 121,831.04

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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.