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Finding the Fourth Proportional to 379,152.99, 523,226.78 and 218,008.68

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Solution

The fourth proportional to 379,152.99, 523,226.78 and 218,008.68 is: 300,849.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,152.99 : 523,226.78 = 218,008.68 : x
  2. Step 2: Convert to fraction form
    379,152.99/523,226.78 = 218,008.68/x
  3. Step 3: Cross multiply
    379,152.99x = 523,226.78 × 218,008.68
  4. Step 4: Simplify right side
    379,152.99x = 114,067,979,648.45
  5. Step 5: Solve for x
    x = 114,067,979,648.45/379,152.99
  6. Step 6: Final answer
    x = 300,849.48

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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.