Home / 397,100.61-548,003.09-215,812.55

Finding the Fourth Proportional to 397,100.61, 548,003.09 and 215,812.55

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Solution

The fourth proportional to 397,100.61, 548,003.09 and 215,812.55 is: 297,823.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,100.61 : 548,003.09 = 215,812.55 : x
  2. Step 2: Convert to fraction form
    397,100.61/548,003.09 = 215,812.55/x
  3. Step 3: Cross multiply
    397,100.61x = 548,003.09 × 215,812.55
  4. Step 4: Simplify right side
    397,100.61x = 118,265,944,260.78
  5. Step 5: Solve for x
    x = 118,265,944,260.78/397,100.61
  6. Step 6: Final answer
    x = 297,823.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.