Home / 218,423.16-327,517.29-128,496.96

Finding the Fourth Proportional to 218,423.16, 327,517.29 and 128,496.96

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Solution

The fourth proportional to 218,423.16, 327,517.29 and 128,496.96 is: 192,676.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,423.16 : 327,517.29 = 128,496.96 : x
  2. Step 2: Convert to fraction form
    218,423.16/327,517.29 = 128,496.96/x
  3. Step 3: Cross multiply
    218,423.16x = 327,517.29 × 128,496.96
  4. Step 4: Simplify right side
    218,423.16x = 42,084,976,112.44
  5. Step 5: Solve for x
    x = 42,084,976,112.44/218,423.16
  6. Step 6: Final answer
    x = 192,676.34

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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.