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Finding the Fourth Proportional to 315,171.52, 472,761.40 and 104,809.44

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Solution

The fourth proportional to 315,171.52, 472,761.40 and 104,809.44 is: 157,215.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,171.52 : 472,761.40 = 104,809.44 : x
  2. Step 2: Convert to fraction form
    315,171.52/472,761.40 = 104,809.44/x
  3. Step 3: Cross multiply
    315,171.52x = 472,761.40 × 104,809.44
  4. Step 4: Simplify right side
    315,171.52x = 49,549,857,587.62
  5. Step 5: Solve for x
    x = 49,549,857,587.62/315,171.52
  6. Step 6: Final answer
    x = 157,215.53

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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.