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Finding the Fourth Proportional to 397,180.60, 548,112.50 and 215,892.48

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Solution

The fourth proportional to 397,180.60, 548,112.50 and 215,892.48 is: 297,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,180.60 : 548,112.50 = 215,892.48 : x
  2. Step 2: Convert to fraction form
    397,180.60/548,112.50 = 215,892.48/x
  3. Step 3: Cross multiply
    397,180.60x = 548,112.50 × 215,892.48
  4. Step 4: Simplify right side
    397,180.60x = 118,333,366,944
  5. Step 5: Solve for x
    x = 118,333,366,944/397,180.60
  6. Step 6: Final answer
    x = 297,933.40

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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.