Home / 258,239.86-387,382.08-71,251.36

Finding the Fourth Proportional to 258,239.86, 387,382.08 and 71,251.36

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Solution

The fourth proportional to 258,239.86, 387,382.08 and 71,251.36 is: 106,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,239.86 : 387,382.08 = 71,251.36 : x
  2. Step 2: Convert to fraction form
    258,239.86/387,382.08 = 71,251.36/x
  3. Step 3: Cross multiply
    258,239.86x = 387,382.08 × 71,251.36
  4. Step 4: Simplify right side
    258,239.86x = 27,601,500,039.63
  5. Step 5: Solve for x
    x = 27,601,500,039.63/258,239.86
  6. Step 6: Final answer
    x = 106,883.19

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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.