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Finding the Fourth Proportional to 411,772.78, 568,278.88 and 303,372.76

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Solution

The fourth proportional to 411,772.78, 568,278.88 and 303,372.76 is: 418,678.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,772.78 : 568,278.88 = 303,372.76 : x
  2. Step 2: Convert to fraction form
    411,772.78/568,278.88 = 303,372.76/x
  3. Step 3: Cross multiply
    411,772.78x = 568,278.88 × 303,372.76
  4. Step 4: Simplify right side
    411,772.78x = 172,400,328,337.66
  5. Step 5: Solve for x
    x = 172,400,328,337.66/411,772.78
  6. Step 6: Final answer
    x = 418,678.31

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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.