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Finding the Fourth Proportional to 377,072.76, 520,363.40 and 204,990.69

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Solution

The fourth proportional to 377,072.76, 520,363.40 and 204,990.69 is: 282,888.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,072.76 : 520,363.40 = 204,990.69 : x
  2. Step 2: Convert to fraction form
    377,072.76/520,363.40 = 204,990.69/x
  3. Step 3: Cross multiply
    377,072.76x = 520,363.40 × 204,990.69
  4. Step 4: Simplify right side
    377,072.76x = 106,669,651,391.79
  5. Step 5: Solve for x
    x = 106,669,651,391.79/377,072.76
  6. Step 6: Final answer
    x = 282,888.78

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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.