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Finding the Fourth Proportional to 478,306.70, 660,067.71 and 263,447.54

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Solution

The fourth proportional to 478,306.70, 660,067.71 and 263,447.54 is: 363,560.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,306.70 : 660,067.71 = 263,447.54 : x
  2. Step 2: Convert to fraction form
    478,306.70/660,067.71 = 263,447.54/x
  3. Step 3: Cross multiply
    478,306.70x = 660,067.71 × 263,447.54
  4. Step 4: Simplify right side
    478,306.70x = 173,893,214,432.93
  5. Step 5: Solve for x
    x = 173,893,214,432.93/478,306.70
  6. Step 6: Final answer
    x = 363,560.06

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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.