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Finding the Fourth Proportional to 221,429.57, 305,589.71 and 125,930.57

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Solution

The fourth proportional to 221,429.57, 305,589.71 and 125,930.57 is: 173,793.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,429.57 : 305,589.71 = 125,930.57 : x
  2. Step 2: Convert to fraction form
    221,429.57/305,589.71 = 125,930.57/x
  3. Step 3: Cross multiply
    221,429.57x = 305,589.71 × 125,930.57
  4. Step 4: Simplify right side
    221,429.57x = 38,483,085,153.31
  5. Step 5: Solve for x
    x = 38,483,085,153.31/221,429.57
  6. Step 6: Final answer
    x = 173,793.80

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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.