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Finding the Fourth Proportional to 377,687.88, 521,279.19 and 216,544.05

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Solution

The fourth proportional to 377,687.88, 521,279.19 and 216,544.05 is: 298,870.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,687.88 : 521,279.19 = 216,544.05 : x
  2. Step 2: Convert to fraction form
    377,687.88/521,279.19 = 216,544.05/x
  3. Step 3: Cross multiply
    377,687.88x = 521,279.19 × 216,544.05
  4. Step 4: Simplify right side
    377,687.88x = 112,879,906,983.32
  5. Step 5: Solve for x
    x = 112,879,906,983.32/377,687.88
  6. Step 6: Final answer
    x = 298,870.87

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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.