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Finding the Fourth Proportional to 266,769.15, 399,709.43 and 187,717.28

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Solution

The fourth proportional to 266,769.15, 399,709.43 and 187,717.28 is: 281,263.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,769.15 : 399,709.43 = 187,717.28 : x
  2. Step 2: Convert to fraction form
    266,769.15/399,709.43 = 187,717.28/x
  3. Step 3: Cross multiply
    266,769.15x = 399,709.43 × 187,717.28
  4. Step 4: Simplify right side
    266,769.15x = 75,032,364,052.82
  5. Step 5: Solve for x
    x = 75,032,364,052.82/266,769.15
  6. Step 6: Final answer
    x = 281,263.27

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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.