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Finding the Fourth Proportional to 538,276.72, 806,811.48 and 218,354.20

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Solution

The fourth proportional to 538,276.72, 806,811.48 and 218,354.20 is: 327,286.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,276.72 : 806,811.48 = 218,354.20 : x
  2. Step 2: Convert to fraction form
    538,276.72/806,811.48 = 218,354.20/x
  3. Step 3: Cross multiply
    538,276.72x = 806,811.48 × 218,354.20
  4. Step 4: Simplify right side
    538,276.72x = 176,170,675,266.22
  5. Step 5: Solve for x
    x = 176,170,675,266.22/538,276.72
  6. Step 6: Final answer
    x = 327,286.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.