Home / 397,724.78-548,860.29-218,876.78

Finding the Fourth Proportional to 397,724.78, 548,860.29 and 218,876.78

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Solution

The fourth proportional to 397,724.78, 548,860.29 and 218,876.78 is: 302,050.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,724.78 : 548,860.29 = 218,876.78 : x
  2. Step 2: Convert to fraction form
    397,724.78/548,860.29 = 218,876.78/x
  3. Step 3: Cross multiply
    397,724.78x = 548,860.29 × 218,876.78
  4. Step 4: Simplify right side
    397,724.78x = 120,132,772,945.07
  5. Step 5: Solve for x
    x = 120,132,772,945.07/397,724.78
  6. Step 6: Final answer
    x = 302,050.01

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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.