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Finding the Fourth Proportional to 206,724.40, 310,086.60 and 88,407.70

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Solution

The fourth proportional to 206,724.40, 310,086.60 and 88,407.70 is: 132,611.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,724.40 : 310,086.60 = 88,407.70 : x
  2. Step 2: Convert to fraction form
    206,724.40/310,086.60 = 88,407.70/x
  3. Step 3: Cross multiply
    206,724.40x = 310,086.60 × 88,407.70
  4. Step 4: Simplify right side
    206,724.40x = 27,414,043,106.82
  5. Step 5: Solve for x
    x = 27,414,043,106.82/206,724.40
  6. Step 6: Final answer
    x = 132,611.55

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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.