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Finding the Fourth Proportional to 482,520.65, 665,908.29 and 278,608.82

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Solution

The fourth proportional to 482,520.65, 665,908.29 and 278,608.82 is: 384,497.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,520.65 : 665,908.29 = 278,608.82 : x
  2. Step 2: Convert to fraction form
    482,520.65/665,908.29 = 278,608.82/x
  3. Step 3: Cross multiply
    482,520.65x = 665,908.29 × 278,608.82
  4. Step 4: Simplify right side
    482,520.65x = 185,527,919,575.58
  5. Step 5: Solve for x
    x = 185,527,919,575.58/482,520.65
  6. Step 6: Final answer
    x = 384,497.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.