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Finding the Fourth Proportional to 387,296.78, 580,961.57 and 121,062.33

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Solution

The fourth proportional to 387,296.78, 580,961.57 and 121,062.33 is: 181,598.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,296.78 : 580,961.57 = 121,062.33 : x
  2. Step 2: Convert to fraction form
    387,296.78/580,961.57 = 121,062.33/x
  3. Step 3: Cross multiply
    387,296.78x = 580,961.57 × 121,062.33
  4. Step 4: Simplify right side
    387,296.78x = 70,332,560,699.35
  5. Step 5: Solve for x
    x = 70,332,560,699.35/387,296.78
  6. Step 6: Final answer
    x = 181,598.62

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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.