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Finding the Fourth Proportional to 377,218.70, 520,568.11 and 216,087.80

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Solution

The fourth proportional to 377,218.70, 520,568.11 and 216,087.80 is: 298,204.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,218.70 : 520,568.11 = 216,087.80 : x
  2. Step 2: Convert to fraction form
    377,218.70/520,568.11 = 216,087.80/x
  3. Step 3: Cross multiply
    377,218.70x = 520,568.11 × 216,087.80
  4. Step 4: Simplify right side
    377,218.70x = 112,488,417,640.06
  5. Step 5: Solve for x
    x = 112,488,417,640.06/377,218.70
  6. Step 6: Final answer
    x = 298,204.78

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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.