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Finding the Fourth Proportional to 397,717.76, 548,850.59 and 218,869.76

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Solution

The fourth proportional to 397,717.76, 548,850.59 and 218,869.76 is: 302,040.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,717.76 : 548,850.59 = 218,869.76 : x
  2. Step 2: Convert to fraction form
    397,717.76/548,850.59 = 218,869.76/x
  3. Step 3: Cross multiply
    397,717.76x = 548,850.59 × 218,869.76
  4. Step 4: Simplify right side
    397,717.76x = 120,126,796,909.16
  5. Step 5: Solve for x
    x = 120,126,796,909.16/397,717.76
  6. Step 6: Final answer
    x = 302,040.31

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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.