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Finding the Fourth Proportional to 266,443.84, 399,862.86 and 126,202.78

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Solution

The fourth proportional to 266,443.84, 399,862.86 and 126,202.78 is: 189,397.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,443.84 : 399,862.86 = 126,202.78 : x
  2. Step 2: Convert to fraction form
    266,443.84/399,862.86 = 126,202.78/x
  3. Step 3: Cross multiply
    266,443.84x = 399,862.86 × 126,202.78
  4. Step 4: Simplify right side
    266,443.84x = 50,463,804,550.75
  5. Step 5: Solve for x
    x = 50,463,804,550.75/266,443.84
  6. Step 6: Final answer
    x = 189,397.53

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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.