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Finding the Fourth Proportional to 218,806.91, 328,210.25 and 69,062.21

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Solution

The fourth proportional to 218,806.91, 328,210.25 and 69,062.21 is: 103,593.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,806.91 : 328,210.25 = 69,062.21 : x
  2. Step 2: Convert to fraction form
    218,806.91/328,210.25 = 69,062.21/x
  3. Step 3: Cross multiply
    218,806.91x = 328,210.25 × 69,062.21
  4. Step 4: Simplify right side
    218,806.91x = 22,666,923,223.29
  5. Step 5: Solve for x
    x = 22,666,923,223.29/218,806.91
  6. Step 6: Final answer
    x = 103,593.27

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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.