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Finding the Fourth Proportional to 324,943.93, 487,208.25 and 156,128.32

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Solution

The fourth proportional to 324,943.93, 487,208.25 and 156,128.32 is: 234,092.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,943.93 : 487,208.25 = 156,128.32 : x
  2. Step 2: Convert to fraction form
    324,943.93/487,208.25 = 156,128.32/x
  3. Step 3: Cross multiply
    324,943.93x = 487,208.25 × 156,128.32
  4. Step 4: Simplify right side
    324,943.93x = 76,067,005,562.64
  5. Step 5: Solve for x
    x = 76,067,005,562.64/324,943.93
  6. Step 6: Final answer
    x = 234,092.71

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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.