Home / 218,711.38-328,067.09-52,499.38

Finding the Fourth Proportional to 218,711.38, 328,067.09 and 52,499.38

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Solution

The fourth proportional to 218,711.38, 328,067.09 and 52,499.38 is: 78,749.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,711.38 : 328,067.09 = 52,499.38 : x
  2. Step 2: Convert to fraction form
    218,711.38/328,067.09 = 52,499.38/x
  3. Step 3: Cross multiply
    218,711.38x = 328,067.09 × 52,499.38
  4. Step 4: Simplify right side
    218,711.38x = 17,223,318,823.40
  5. Step 5: Solve for x
    x = 17,223,318,823.40/218,711.38
  6. Step 6: Final answer
    x = 78,749.07

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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.