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Finding the Fourth Proportional to 377,369.25, 520,806.39 and 281,709.87

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Solution

The fourth proportional to 377,369.25, 520,806.39 and 281,709.87 is: 388,787.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,369.25 : 520,806.39 = 281,709.87 : x
  2. Step 2: Convert to fraction form
    377,369.25/520,806.39 = 281,709.87/x
  3. Step 3: Cross multiply
    377,369.25x = 520,806.39 × 281,709.87
  4. Step 4: Simplify right side
    377,369.25x = 146,716,300,422.07
  5. Step 5: Solve for x
    x = 146,716,300,422.07/377,369.25
  6. Step 6: Final answer
    x = 388,787.11

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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.