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Finding the Fourth Proportional to 218,849.82, 328,151.61 and 69,062.20

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Solution

The fourth proportional to 218,849.82, 328,151.61 and 69,062.20 is: 103,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,849.82 : 328,151.61 = 69,062.20 : x
  2. Step 2: Convert to fraction form
    218,849.82/328,151.61 = 69,062.20/x
  3. Step 3: Cross multiply
    218,849.82x = 328,151.61 × 69,062.20
  4. Step 4: Simplify right side
    218,849.82x = 22,662,872,120.14
  5. Step 5: Solve for x
    x = 22,662,872,120.14/218,849.82
  6. Step 6: Final answer
    x = 103,554.45

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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.