Home / 218,864.80-328,556.40-217,309.60

Finding the Fourth Proportional to 218,864.80, 328,556.40 and 217,309.60

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Solution

The fourth proportional to 218,864.80, 328,556.40 and 217,309.60 is: 326,221.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,864.80 : 328,556.40 = 217,309.60 : x
  2. Step 2: Convert to fraction form
    218,864.80/328,556.40 = 217,309.60/x
  3. Step 3: Cross multiply
    218,864.80x = 328,556.40 × 217,309.60
  4. Step 4: Simplify right side
    218,864.80x = 71,398,459,861.44
  5. Step 5: Solve for x
    x = 71,398,459,861.44/218,864.80
  6. Step 6: Final answer
    x = 326,221.76

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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.