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Finding the Fourth Proportional to 218,867.25, 328,300.88 and 52,655.25

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Solution

The fourth proportional to 218,867.25, 328,300.88 and 52,655.25 is: 78,982.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,867.25 : 328,300.88 = 52,655.25 : x
  2. Step 2: Convert to fraction form
    218,867.25/328,300.88 = 52,655.25/x
  3. Step 3: Cross multiply
    218,867.25x = 328,300.88 × 52,655.25
  4. Step 4: Simplify right side
    218,867.25x = 17,286,764,911.62
  5. Step 5: Solve for x
    x = 17,286,764,911.62/218,867.25
  6. Step 6: Final answer
    x = 78,982.88

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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.