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Finding the Fourth Proportional to 251,227.20, 377,455.20 and 189,019.20

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Solution

The fourth proportional to 251,227.20, 377,455.20 and 189,019.20 is: 283,991.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,227.20 : 377,455.20 = 189,019.20 : x
  2. Step 2: Convert to fraction form
    251,227.20/377,455.20 = 189,019.20/x
  3. Step 3: Cross multiply
    251,227.20x = 377,455.20 × 189,019.20
  4. Step 4: Simplify right side
    251,227.20x = 71,346,279,939.84
  5. Step 5: Solve for x
    x = 71,346,279,939.84/251,227.20
  6. Step 6: Final answer
    x = 283,991.06

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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.