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Finding the Fourth Proportional to 266,414.15, 399,611.99 and 66,736.25

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Solution

The fourth proportional to 266,414.15, 399,611.99 and 66,736.25 is: 100,102.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,414.15 : 399,611.99 = 66,736.25 : x
  2. Step 2: Convert to fraction form
    266,414.15/399,611.99 = 66,736.25/x
  3. Step 3: Cross multiply
    266,414.15x = 399,611.99 × 66,736.25
  4. Step 4: Simplify right side
    266,414.15x = 26,668,603,335.90
  5. Step 5: Solve for x
    x = 26,668,603,335.90/266,414.15
  6. Step 6: Final answer
    x = 100,102.05

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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.