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Finding the Fourth Proportional to 266,430.38, 399,842.82 and 126,189.41

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Solution

The fourth proportional to 266,430.38, 399,842.82 and 126,189.41 is: 189,377.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,430.38 : 399,842.82 = 126,189.41 : x
  2. Step 2: Convert to fraction form
    266,430.38/399,842.82 = 126,189.41/x
  3. Step 3: Cross multiply
    266,430.38x = 399,842.82 × 126,189.41
  4. Step 4: Simplify right side
    266,430.38x = 50,455,927,549.32
  5. Step 5: Solve for x
    x = 50,455,927,549.32/266,430.38
  6. Step 6: Final answer
    x = 189,377.53

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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.