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Finding the Fourth Proportional to 207,230.27, 285,978.21 and 122,352.80

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Solution

The fourth proportional to 207,230.27, 285,978.21 and 122,352.80 is: 168,847.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,230.27 : 285,978.21 = 122,352.80 : x
  2. Step 2: Convert to fraction form
    207,230.27/285,978.21 = 122,352.80/x
  3. Step 3: Cross multiply
    207,230.27x = 285,978.21 × 122,352.80
  4. Step 4: Simplify right side
    207,230.27x = 34,990,234,732.49
  5. Step 5: Solve for x
    x = 34,990,234,732.49/207,230.27
  6. Step 6: Final answer
    x = 168,847.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.