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Finding the Fourth Proportional to 665,855.68, 998,576.16 and 222,520

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Solution

The fourth proportional to 665,855.68, 998,576.16 and 222,520 is: 333,710.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,855.68 : 998,576.16 = 222,520 : x
  2. Step 2: Convert to fraction form
    665,855.68/998,576.16 = 222,520/x
  3. Step 3: Cross multiply
    665,855.68x = 998,576.16 × 222,520
  4. Step 4: Simplify right side
    665,855.68x = 222,203,167,123.20
  5. Step 5: Solve for x
    x = 222,203,167,123.20/665,855.68
  6. Step 6: Final answer
    x = 333,710.70

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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.