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Finding the Fourth Proportional to 207,777.20, 310,888.20 and 137,793.20

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Solution

The fourth proportional to 207,777.20, 310,888.20 and 137,793.20 is: 206,174.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,777.20 : 310,888.20 = 137,793.20 : x
  2. Step 2: Convert to fraction form
    207,777.20/310,888.20 = 137,793.20/x
  3. Step 3: Cross multiply
    207,777.20x = 310,888.20 × 137,793.20
  4. Step 4: Simplify right side
    207,777.20x = 42,838,279,920.24
  5. Step 5: Solve for x
    x = 42,838,279,920.24/207,777.20
  6. Step 6: Final answer
    x = 206,174.11

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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.