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Finding the Fourth Proportional to 266,509.72, 399,806.12 and 159,868.61

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Solution

The fourth proportional to 266,509.72, 399,806.12 and 159,868.61 is: 239,827.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,509.72 : 399,806.12 = 159,868.61 : x
  2. Step 2: Convert to fraction form
    266,509.72/399,806.12 = 159,868.61/x
  3. Step 3: Cross multiply
    266,509.72x = 399,806.12 × 159,868.61
  4. Step 4: Simplify right side
    266,509.72x = 63,916,446,674.86
  5. Step 5: Solve for x
    x = 63,916,446,674.86/266,509.72
  6. Step 6: Final answer
    x = 239,827.83

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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.