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Finding the Fourth Proportional to 208,380.61, 312,229.19 and 88,341.65

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Solution

The fourth proportional to 208,380.61, 312,229.19 and 88,341.65 is: 132,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,380.61 : 312,229.19 = 88,341.65 : x
  2. Step 2: Convert to fraction form
    208,380.61/312,229.19 = 88,341.65/x
  3. Step 3: Cross multiply
    208,380.61x = 312,229.19 × 88,341.65
  4. Step 4: Simplify right side
    208,380.61x = 27,582,841,653.33
  5. Step 5: Solve for x
    x = 27,582,841,653.33/208,380.61
  6. Step 6: Final answer
    x = 132,367.60

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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.