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Finding the Fourth Proportional to 206,724.70, 310,087.05 and 180,480.70

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Solution

The fourth proportional to 206,724.70, 310,087.05 and 180,480.70 is: 270,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,724.70 : 310,087.05 = 180,480.70 : x
  2. Step 2: Convert to fraction form
    206,724.70/310,087.05 = 180,480.70/x
  3. Step 3: Cross multiply
    206,724.70x = 310,087.05 × 180,480.70
  4. Step 4: Simplify right side
    206,724.70x = 55,964,727,844.94
  5. Step 5: Solve for x
    x = 55,964,727,844.94/206,724.70
  6. Step 6: Final answer
    x = 270,721.05

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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.