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Finding the Fourth Proportional to 266,663.36, 399,995.43 and 108,891.82

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Solution

The fourth proportional to 266,663.36, 399,995.43 and 108,891.82 is: 163,337.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,663.36 : 399,995.43 = 108,891.82 : x
  2. Step 2: Convert to fraction form
    266,663.36/399,995.43 = 108,891.82/x
  3. Step 3: Cross multiply
    266,663.36x = 399,995.43 × 108,891.82
  4. Step 4: Simplify right side
    266,663.36x = 43,556,230,364.38
  5. Step 5: Solve for x
    x = 43,556,230,364.38/266,663.36
  6. Step 6: Final answer
    x = 163,337.89

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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.