Home / 397,640.45-548,727.39-216,353.12

Finding the Fourth Proportional to 397,640.45, 548,727.39 and 216,353.12

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Solution

The fourth proportional to 397,640.45, 548,727.39 and 216,353.12 is: 298,558.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,640.45 : 548,727.39 = 216,353.12 : x
  2. Step 2: Convert to fraction form
    397,640.45/548,727.39 = 216,353.12/x
  3. Step 3: Cross multiply
    397,640.45x = 548,727.39 × 216,353.12
  4. Step 4: Simplify right side
    397,640.45x = 118,718,880,112.32
  5. Step 5: Solve for x
    x = 118,718,880,112.32/397,640.45
  6. Step 6: Final answer
    x = 298,558.36

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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.