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Finding the Fourth Proportional to 377,923, 521,488.38 and 216,769.72

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Solution

The fourth proportional to 377,923, 521,488.38 and 216,769.72 is: 299,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,923 : 521,488.38 = 216,769.72 : x
  2. Step 2: Convert to fraction form
    377,923/521,488.38 = 216,769.72/x
  3. Step 3: Cross multiply
    377,923x = 521,488.38 × 216,769.72
  4. Step 4: Simplify right side
    377,923x = 113,042,890,115.85
  5. Step 5: Solve for x
    x = 113,042,890,115.85/377,923
  6. Step 6: Final answer
    x = 299,116.20

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1.5x scale

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.