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Finding the Fourth Proportional to 204,854.60, 307,281.90 and 125,712.20

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Solution

The fourth proportional to 204,854.60, 307,281.90 and 125,712.20 is: 188,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,854.60 : 307,281.90 = 125,712.20 : x
  2. Step 2: Convert to fraction form
    204,854.60/307,281.90 = 125,712.20/x
  3. Step 3: Cross multiply
    204,854.60x = 307,281.90 × 125,712.20
  4. Step 4: Simplify right side
    204,854.60x = 38,629,083,669.18
  5. Step 5: Solve for x
    x = 38,629,083,669.18/204,854.60
  6. Step 6: Final answer
    x = 188,568.30

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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.