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Finding the Fourth Proportional to 491,293.02, 677,997.62 and 276,440.72

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Solution

The fourth proportional to 491,293.02, 677,997.62 and 276,440.72 is: 381,495.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,293.02 : 677,997.62 = 276,440.72 : x
  2. Step 2: Convert to fraction form
    491,293.02/677,997.62 = 276,440.72/x
  3. Step 3: Cross multiply
    491,293.02x = 677,997.62 × 276,440.72
  4. Step 4: Simplify right side
    491,293.02x = 187,426,150,231.09
  5. Step 5: Solve for x
    x = 187,426,150,231.09/491,293.02
  6. Step 6: Final answer
    x = 381,495.65

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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.