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Finding the Fourth Proportional to 377,471.74, 520,923.25 and 216,357.15

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Solution

The fourth proportional to 377,471.74, 520,923.25 and 216,357.15 is: 298,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,471.74 : 520,923.25 = 216,357.15 : x
  2. Step 2: Convert to fraction form
    377,471.74/520,923.25 = 216,357.15/x
  3. Step 3: Cross multiply
    377,471.74x = 520,923.25 × 216,357.15
  4. Step 4: Simplify right side
    377,471.74x = 112,705,469,738.74
  5. Step 5: Solve for x
    x = 112,705,469,738.74/377,471.74
  6. Step 6: Final answer
    x = 298,579.89

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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.