Home / 397,270.26-548,238.87-215,981.78

Finding the Fourth Proportional to 397,270.26, 548,238.87 and 215,981.78

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Solution

The fourth proportional to 397,270.26, 548,238.87 and 215,981.78 is: 298,058.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,270.26 : 548,238.87 = 215,981.78 : x
  2. Step 2: Convert to fraction form
    397,270.26/548,238.87 = 215,981.78/x
  3. Step 3: Cross multiply
    397,270.26x = 548,238.87 × 215,981.78
  4. Step 4: Simplify right side
    397,270.26x = 118,409,604,266.59
  5. Step 5: Solve for x
    x = 118,409,604,266.59/397,270.26
  6. Step 6: Final answer
    x = 298,058.06

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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.