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Finding the Fourth Proportional to 266,003.81, 399,186.45 and 108,260.97

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Solution

The fourth proportional to 266,003.81, 399,186.45 and 108,260.97 is: 162,465.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,003.81 : 399,186.45 = 108,260.97 : x
  2. Step 2: Convert to fraction form
    266,003.81/399,186.45 = 108,260.97/x
  3. Step 3: Cross multiply
    266,003.81x = 399,186.45 × 108,260.97
  4. Step 4: Simplify right side
    266,003.81x = 43,216,312,287.86
  5. Step 5: Solve for x
    x = 43,216,312,287.86/266,003.81
  6. Step 6: Final answer
    x = 162,465.02

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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.