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Finding the Fourth Proportional to 387,218.80, 580,828.20 and 325,010.80

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Solution

The fourth proportional to 387,218.80, 580,828.20 and 325,010.80 is: 487,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,218.80 : 580,828.20 = 325,010.80 : x
  2. Step 2: Convert to fraction form
    387,218.80/580,828.20 = 325,010.80/x
  3. Step 3: Cross multiply
    387,218.80x = 580,828.20 × 325,010.80
  4. Step 4: Simplify right side
    387,218.80x = 188,775,437,944.56
  5. Step 5: Solve for x
    x = 188,775,437,944.56/387,218.80
  6. Step 6: Final answer
    x = 487,516.20

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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.