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Finding the Fourth Proportional to 309,777.11, 426,695.85 and 218,976.92

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Solution

The fourth proportional to 309,777.11, 426,695.85 and 218,976.92 is: 301,625.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,777.11 : 426,695.85 = 218,976.92 : x
  2. Step 2: Convert to fraction form
    309,777.11/426,695.85 = 218,976.92/x
  3. Step 3: Cross multiply
    309,777.11x = 426,695.85 × 218,976.92
  4. Step 4: Simplify right side
    309,777.11x = 93,436,542,476.41
  5. Step 5: Solve for x
    x = 93,436,542,476.41/309,777.11
  6. Step 6: Final answer
    x = 301,625.07

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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.