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Finding the Fourth Proportional to 207,874.35, 286,813.31 and 127,272.47

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Solution

The fourth proportional to 207,874.35, 286,813.31 and 127,272.47 is: 175,603.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,874.35 : 286,813.31 = 127,272.47 : x
  2. Step 2: Convert to fraction form
    207,874.35/286,813.31 = 127,272.47/x
  3. Step 3: Cross multiply
    207,874.35x = 286,813.31 × 127,272.47
  4. Step 4: Simplify right side
    207,874.35x = 36,503,436,322.15
  5. Step 5: Solve for x
    x = 36,503,436,322.15/207,874.35
  6. Step 6: Final answer
    x = 175,603.37

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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.