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Finding the Fourth Proportional to 207,789.22, 286,728.42 and 127,239.58

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Solution

The fourth proportional to 207,789.22, 286,728.42 and 127,239.58 is: 175,577.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,789.22 : 286,728.42 = 127,239.58 : x
  2. Step 2: Convert to fraction form
    207,789.22/286,728.42 = 127,239.58/x
  3. Step 3: Cross multiply
    207,789.22x = 286,728.42 × 127,239.58
  4. Step 4: Simplify right side
    207,789.22x = 36,483,203,734.86
  5. Step 5: Solve for x
    x = 36,483,203,734.86/207,789.22
  6. Step 6: Final answer
    x = 175,577.94

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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.