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Finding the Fourth Proportional to 218,999.52, 328,280.32 and 188,891.84

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Solution

The fourth proportional to 218,999.52, 328,280.32 and 188,891.84 is: 283,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,999.52 : 328,280.32 = 188,891.84 : x
  2. Step 2: Convert to fraction form
    218,999.52/328,280.32 = 188,891.84/x
  3. Step 3: Cross multiply
    218,999.52x = 328,280.32 × 188,891.84
  4. Step 4: Simplify right side
    218,999.52x = 62,009,473,680.59
  5. Step 5: Solve for x
    x = 62,009,473,680.59/218,999.52
  6. Step 6: Final answer
    x = 283,148.90

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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.