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Finding the Fourth Proportional to 207,590.91, 311,484.78 and 123,517.17

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Solution

The fourth proportional to 207,590.91, 311,484.78 and 123,517.17 is: 185,334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,590.91 : 311,484.78 = 123,517.17 : x
  2. Step 2: Convert to fraction form
    207,590.91/311,484.78 = 123,517.17/x
  3. Step 3: Cross multiply
    207,590.91x = 311,484.78 × 123,517.17
  4. Step 4: Simplify right side
    207,590.91x = 38,473,718,523.67
  5. Step 5: Solve for x
    x = 38,473,718,523.67/207,590.91
  6. Step 6: Final answer
    x = 185,334.31

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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.