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Finding the Fourth Proportional to 568,135.99, 851,981.64 and 212,956.30

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Solution

The fourth proportional to 568,135.99, 851,981.64 and 212,956.30 is: 319,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,135.99 : 851,981.64 = 212,956.30 : x
  2. Step 2: Convert to fraction form
    568,135.99/851,981.64 = 212,956.30/x
  3. Step 3: Cross multiply
    568,135.99x = 851,981.64 × 212,956.30
  4. Step 4: Simplify right side
    568,135.99x = 181,434,857,722.33
  5. Step 5: Solve for x
    x = 181,434,857,722.33/568,135.99
  6. Step 6: Final answer
    x = 319,351.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.