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Finding the Fourth Proportional to 422,601.81, 583,164.05 and 231,601.65

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Solution

The fourth proportional to 422,601.81, 583,164.05 and 231,601.65 is: 319,595.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,601.81 : 583,164.05 = 231,601.65 : x
  2. Step 2: Convert to fraction form
    422,601.81/583,164.05 = 231,601.65/x
  3. Step 3: Cross multiply
    422,601.81x = 583,164.05 × 231,601.65
  4. Step 4: Simplify right side
    422,601.81x = 135,061,756,200.68
  5. Step 5: Solve for x
    x = 135,061,756,200.68/422,601.81
  6. Step 6: Final answer
    x = 319,595.78

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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.