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Finding the Fourth Proportional to 491,223.08, 677,832.90 and 276,437

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Solution

The fourth proportional to 491,223.08, 677,832.90 and 276,437 is: 381,452.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,223.08 : 677,832.90 = 276,437 : x
  2. Step 2: Convert to fraction form
    491,223.08/677,832.90 = 276,437/x
  3. Step 3: Cross multiply
    491,223.08x = 677,832.90 × 276,437
  4. Step 4: Simplify right side
    491,223.08x = 187,378,093,377.30
  5. Step 5: Solve for x
    x = 187,378,093,377.30/491,223.08
  6. Step 6: Final answer
    x = 381,452.14

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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.