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Finding the Fourth Proportional to 235,029.45, 324,019.31 and 161,439.65

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Solution

The fourth proportional to 235,029.45, 324,019.31 and 161,439.65 is: 222,565.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,029.45 : 324,019.31 = 161,439.65 : x
  2. Step 2: Convert to fraction form
    235,029.45/324,019.31 = 161,439.65/x
  3. Step 3: Cross multiply
    235,029.45x = 324,019.31 × 161,439.65
  4. Step 4: Simplify right side
    235,029.45x = 52,309,561,572.35
  5. Step 5: Solve for x
    x = 52,309,561,572.35/235,029.45
  6. Step 6: Final answer
    x = 222,565.99

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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.