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Finding the Fourth Proportional to 205,512.60, 308,585.70 and 112,200.60

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Solution

The fourth proportional to 205,512.60, 308,585.70 and 112,200.60 is: 168,473.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,512.60 : 308,585.70 = 112,200.60 : x
  2. Step 2: Convert to fraction form
    205,512.60/308,585.70 = 112,200.60/x
  3. Step 3: Cross multiply
    205,512.60x = 308,585.70 × 112,200.60
  4. Step 4: Simplify right side
    205,512.60x = 34,623,500,691.42
  5. Step 5: Solve for x
    x = 34,623,500,691.42/205,512.60
  6. Step 6: Final answer
    x = 168,473.86

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1.5x scale

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.