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Finding the Fourth Proportional to 207,906.43, 286,845.38 and 127,249.87

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Solution

The fourth proportional to 207,906.43, 286,845.38 and 127,249.87 is: 175,564.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,906.43 : 286,845.38 = 127,249.87 : x
  2. Step 2: Convert to fraction form
    207,906.43/286,845.38 = 127,249.87/x
  3. Step 3: Cross multiply
    207,906.43x = 286,845.38 × 127,249.87
  4. Step 4: Simplify right side
    207,906.43x = 36,501,037,315.10
  5. Step 5: Solve for x
    x = 36,501,037,315.10/207,906.43
  6. Step 6: Final answer
    x = 175,564.74

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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.