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Finding the Fourth Proportional to 397,146.63, 548,066.01 and 215,858.97

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Solution

The fourth proportional to 397,146.63, 548,066.01 and 215,858.97 is: 297,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,146.63 : 548,066.01 = 215,858.97 : x
  2. Step 2: Convert to fraction form
    397,146.63/548,066.01 = 215,858.97/x
  3. Step 3: Cross multiply
    397,146.63x = 548,066.01 × 215,858.97
  4. Step 4: Simplify right side
    397,146.63x = 118,304,964,410.61
  5. Step 5: Solve for x
    x = 118,304,964,410.61/397,146.63
  6. Step 6: Final answer
    x = 297,887.37

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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.