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Finding the Fourth Proportional to 377,086.12, 520,304.23 and 211,519.42

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Solution

The fourth proportional to 377,086.12, 520,304.23 and 211,519.42 is: 291,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,086.12 : 520,304.23 = 211,519.42 : x
  2. Step 2: Convert to fraction form
    377,086.12/520,304.23 = 211,519.42/x
  3. Step 3: Cross multiply
    377,086.12x = 520,304.23 × 211,519.42
  4. Step 4: Simplify right side
    377,086.12x = 110,054,448,953.15
  5. Step 5: Solve for x
    x = 110,054,448,953.15/377,086.12
  6. Step 6: Final answer
    x = 291,854.95

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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.