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Finding the Fourth Proportional to 218,852.97, 328,282.70 and 61,082.25

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Solution

The fourth proportional to 218,852.97, 328,282.70 and 61,082.25 is: 91,624.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,852.97 : 328,282.70 = 61,082.25 : x
  2. Step 2: Convert to fraction form
    218,852.97/328,282.70 = 61,082.25/x
  3. Step 3: Cross multiply
    218,852.97x = 328,282.70 × 61,082.25
  4. Step 4: Simplify right side
    218,852.97x = 20,052,245,646.66
  5. Step 5: Solve for x
    x = 20,052,245,646.66/218,852.97
  6. Step 6: Final answer
    x = 91,624.28

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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.