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Finding the Fourth Proportional to 478,043.71, 659,687.51 and 263,185.38

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Solution

The fourth proportional to 478,043.71, 659,687.51 and 263,185.38 is: 363,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,043.71 : 659,687.51 = 263,185.38 : x
  2. Step 2: Convert to fraction form
    478,043.71/659,687.51 = 263,185.38/x
  3. Step 3: Cross multiply
    478,043.71x = 659,687.51 × 263,185.38
  4. Step 4: Simplify right side
    478,043.71x = 173,620,108,658.57
  5. Step 5: Solve for x
    x = 173,620,108,658.57/478,043.71
  6. Step 6: Final answer
    x = 363,188.78

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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.