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Finding the Fourth Proportional to 397,363.40, 548,481.56 and 270,112.80

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Solution

The fourth proportional to 397,363.40, 548,481.56 and 270,112.80 is: 372,837.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,363.40 : 548,481.56 = 270,112.80 : x
  2. Step 2: Convert to fraction form
    397,363.40/548,481.56 = 270,112.80/x
  3. Step 3: Cross multiply
    397,363.40x = 548,481.56 × 270,112.80
  4. Step 4: Simplify right side
    397,363.40x = 148,151,888,569.40
  5. Step 5: Solve for x
    x = 148,151,888,569.40/397,363.40
  6. Step 6: Final answer
    x = 372,837.28

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1.5x scale

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.