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Finding the Fourth Proportional to 377,393.84, 520,799.04 and 281,028.80

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Solution

The fourth proportional to 377,393.84, 520,799.04 and 281,028.80 is: 387,816.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,393.84 : 520,799.04 = 281,028.80 : x
  2. Step 2: Convert to fraction form
    377,393.84/520,799.04 = 281,028.80/x
  3. Step 3: Cross multiply
    377,393.84x = 520,799.04 × 281,028.80
  4. Step 4: Simplify right side
    377,393.84x = 146,359,529,252.35
  5. Step 5: Solve for x
    x = 146,359,529,252.35/377,393.84
  6. Step 6: Final answer
    x = 387,816.42

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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.