Home / 388,013.85-580,939.38-198,065.61

Finding the Fourth Proportional to 388,013.85, 580,939.38 and 198,065.61

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Solution

The fourth proportional to 388,013.85, 580,939.38 and 198,065.61 is: 296,546.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,013.85 : 580,939.38 = 198,065.61 : x
  2. Step 2: Convert to fraction form
    388,013.85/580,939.38 = 198,065.61/x
  3. Step 3: Cross multiply
    388,013.85x = 580,939.38 × 198,065.61
  4. Step 4: Simplify right side
    388,013.85x = 115,064,112,672.72
  5. Step 5: Solve for x
    x = 115,064,112,672.72/388,013.85
  6. Step 6: Final answer
    x = 296,546.41

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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.