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Finding the Fourth Proportional to 315,518.78, 472,997.48 and 115,793.44

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Solution

The fourth proportional to 315,518.78, 472,997.48 and 115,793.44 is: 173,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,518.78 : 472,997.48 = 115,793.44 : x
  2. Step 2: Convert to fraction form
    315,518.78/472,997.48 = 115,793.44/x
  3. Step 3: Cross multiply
    315,518.78x = 472,997.48 × 115,793.44
  4. Step 4: Simplify right side
    315,518.78x = 54,770,005,320.53
  5. Step 5: Solve for x
    x = 54,770,005,320.53/315,518.78
  6. Step 6: Final answer
    x = 173,587.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.