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Finding the Fourth Proportional to 206,711,999.80, 310,067,999.70 and 168,448,247.80

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Solution

The fourth proportional to 206,711,999.80, 310,067,999.70 and 168,448,247.80 is: 252,672,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,711,999.80 : 310,067,999.70 = 168,448,247.80 : x
  2. Step 2: Convert to fraction form
    206,711,999.80/310,067,999.70 = 168,448,247.80/x
  3. Step 3: Cross multiply
    206,711,999.80x = 310,067,999.70 × 168,448,247.80
  4. Step 4: Simplify right side
    206,711,999.80x = 52,230,411,248,315,928
  5. Step 5: Solve for x
    x = 52,230,411,248,315,928/206,711,999.80
  6. Step 6: Final answer
    x = 252,672,371.70

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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.