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Finding the Fourth Proportional to 266,665.77, 399,561.26 and 161,514.81

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Solution

The fourth proportional to 266,665.77, 399,561.26 and 161,514.81 is: 242,007.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,665.77 : 399,561.26 = 161,514.81 : x
  2. Step 2: Convert to fraction form
    266,665.77/399,561.26 = 161,514.81/x
  3. Step 3: Cross multiply
    266,665.77x = 399,561.26 × 161,514.81
  4. Step 4: Simplify right side
    266,665.77x = 64,535,060,184.69
  5. Step 5: Solve for x
    x = 64,535,060,184.69/266,665.77
  6. Step 6: Final answer
    x = 242,007.29

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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.