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Finding the Fourth Proportional to 266,433.39, 399,847.32 and 126,192.42

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Solution

The fourth proportional to 266,433.39, 399,847.32 and 126,192.42 is: 189,382.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,433.39 : 399,847.32 = 126,192.42 : x
  2. Step 2: Convert to fraction form
    266,433.39/399,847.32 = 126,192.42/x
  3. Step 3: Cross multiply
    266,433.39x = 399,847.32 × 126,192.42
  4. Step 4: Simplify right side
    266,433.39x = 50,457,700,941.31
  5. Step 5: Solve for x
    x = 50,457,700,941.31/266,433.39
  6. Step 6: Final answer
    x = 189,382.05

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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.