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Finding the Fourth Proportional to 208,891.89, 288,052.61 and 123,992.55

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Solution

The fourth proportional to 208,891.89, 288,052.61 and 123,992.55 is: 170,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,891.89 : 288,052.61 = 123,992.55 : x
  2. Step 2: Convert to fraction form
    208,891.89/288,052.61 = 123,992.55/x
  3. Step 3: Cross multiply
    208,891.89x = 288,052.61 × 123,992.55
  4. Step 4: Simplify right side
    208,891.89x = 35,716,377,028.09
  5. Step 5: Solve for x
    x = 35,716,377,028.09/208,891.89
  6. Step 6: Final answer
    x = 170,980.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.