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Finding the Fourth Proportional to 481,332.76, 664,239.90 and 287,865.88

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Solution

The fourth proportional to 481,332.76, 664,239.90 and 287,865.88 is: 397,255.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,332.76 : 664,239.90 = 287,865.88 : x
  2. Step 2: Convert to fraction form
    481,332.76/664,239.90 = 287,865.88/x
  3. Step 3: Cross multiply
    481,332.76x = 664,239.90 × 287,865.88
  4. Step 4: Simplify right side
    481,332.76x = 191,212,003,344.61
  5. Step 5: Solve for x
    x = 191,212,003,344.61/481,332.76
  6. Step 6: Final answer
    x = 397,255.33

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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.