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Finding the Fourth Proportional to 205,251.60, 307,877.40 and 121,270.80

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Solution

The fourth proportional to 205,251.60, 307,877.40 and 121,270.80 is: 181,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,251.60 : 307,877.40 = 121,270.80 : x
  2. Step 2: Convert to fraction form
    205,251.60/307,877.40 = 121,270.80/x
  3. Step 3: Cross multiply
    205,251.60x = 307,877.40 × 121,270.80
  4. Step 4: Simplify right side
    205,251.60x = 37,336,538,599.92
  5. Step 5: Solve for x
    x = 37,336,538,599.92/205,251.60
  6. Step 6: Final answer
    x = 181,906.20

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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.