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Finding the Fourth Proportional to 478,309.77, 660,067.47 and 263,449.83

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Solution

The fourth proportional to 478,309.77, 660,067.47 and 263,449.83 is: 363,560.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,309.77 : 660,067.47 = 263,449.83 : x
  2. Step 2: Convert to fraction form
    478,309.77/660,067.47 = 263,449.83/x
  3. Step 3: Cross multiply
    478,309.77x = 660,067.47 × 263,449.83
  4. Step 4: Simplify right side
    478,309.77x = 173,894,665,976.24
  5. Step 5: Solve for x
    x = 173,894,665,976.24/478,309.77
  6. Step 6: Final answer
    x = 363,560.77

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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.