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Finding the Fourth Proportional to 377,088.12, 520,306.99 and 211,521.42

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Solution

The fourth proportional to 377,088.12, 520,306.99 and 211,521.42 is: 291,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,088.12 : 520,306.99 = 211,521.42 : x
  2. Step 2: Convert to fraction form
    377,088.12/520,306.99 = 211,521.42/x
  3. Step 3: Cross multiply
    377,088.12x = 520,306.99 × 211,521.42
  4. Step 4: Simplify right side
    377,088.12x = 110,056,073,360.73
  5. Step 5: Solve for x
    x = 110,056,073,360.73/377,088.12
  6. Step 6: Final answer
    x = 291,857.71

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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.