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Finding the Fourth Proportional to 266,314.05, 399,471.08 and 126,346.05

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Solution

The fourth proportional to 266,314.05, 399,471.08 and 126,346.05 is: 189,519.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,314.05 : 399,471.08 = 126,346.05 : x
  2. Step 2: Convert to fraction form
    266,314.05/399,471.08 = 126,346.05/x
  3. Step 3: Cross multiply
    266,314.05x = 399,471.08 × 126,346.05
  4. Step 4: Simplify right side
    266,314.05x = 50,471,592,415.50
  5. Step 5: Solve for x
    x = 50,471,592,415.50/266,314.05
  6. Step 6: Final answer
    x = 189,519.08

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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.