Home / 258,916.50-388,379.61-71,932.86

Finding the Fourth Proportional to 258,916.50, 388,379.61 and 71,932.86

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Solution

The fourth proportional to 258,916.50, 388,379.61 and 71,932.86 is: 107,900.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,916.50 : 388,379.61 = 71,932.86 : x
  2. Step 2: Convert to fraction form
    258,916.50/388,379.61 = 71,932.86/x
  3. Step 3: Cross multiply
    258,916.50x = 388,379.61 × 71,932.86
  4. Step 4: Simplify right side
    258,916.50x = 27,937,256,112.98
  5. Step 5: Solve for x
    x = 27,937,256,112.98/258,916.50
  6. Step 6: Final answer
    x = 107,900.64

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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.