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Finding the Fourth Proportional to 218,774.40, 328,208.04 and 69,057.96

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Solution

The fourth proportional to 218,774.40, 328,208.04 and 69,057.96 is: 103,601.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,774.40 : 328,208.04 = 69,057.96 : x
  2. Step 2: Convert to fraction form
    218,774.40/328,208.04 = 69,057.96/x
  3. Step 3: Cross multiply
    218,774.40x = 328,208.04 × 69,057.96
  4. Step 4: Simplify right side
    218,774.40x = 22,665,377,698.00
  5. Step 5: Solve for x
    x = 22,665,377,698.00/218,774.40
  6. Step 6: Final answer
    x = 103,601.60

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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.