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Finding the Fourth Proportional to 266,412.64, 399,609.74 and 66,734.75

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Solution

The fourth proportional to 266,412.64, 399,609.74 and 66,734.75 is: 100,099.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,412.64 : 399,609.74 = 66,734.75 : x
  2. Step 2: Convert to fraction form
    266,412.64/399,609.74 = 66,734.75/x
  3. Step 3: Cross multiply
    266,412.64x = 399,609.74 × 66,734.75
  4. Step 4: Simplify right side
    266,412.64x = 26,667,854,265.25
  5. Step 5: Solve for x
    x = 26,667,854,265.25/266,412.64
  6. Step 6: Final answer
    x = 100,099.81

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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.