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Finding the Fourth Proportional to 259,722.20, 388,927.20 and 207,234.20

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Solution

The fourth proportional to 259,722.20, 388,927.20 and 207,234.20 is: 310,327.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,722.20 : 388,927.20 = 207,234.20 : x
  2. Step 2: Convert to fraction form
    259,722.20/388,927.20 = 207,234.20/x
  3. Step 3: Cross multiply
    259,722.20x = 388,927.20 × 207,234.20
  4. Step 4: Simplify right side
    259,722.20x = 80,599,017,150.24
  5. Step 5: Solve for x
    x = 80,599,017,150.24/259,722.20
  6. Step 6: Final answer
    x = 310,327.79

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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.