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Finding the Fourth Proportional to 491,233.39, 677,847.23 and 276,368.84

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Solution

The fourth proportional to 491,233.39, 677,847.23 and 276,368.84 is: 381,358.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,233.39 : 677,847.23 = 276,368.84 : x
  2. Step 2: Convert to fraction form
    491,233.39/677,847.23 = 276,368.84/x
  3. Step 3: Cross multiply
    491,233.39x = 677,847.23 × 276,368.84
  4. Step 4: Simplify right side
    491,233.39x = 187,335,856,827.01
  5. Step 5: Solve for x
    x = 187,335,856,827.01/491,233.39
  6. Step 6: Final answer
    x = 381,358.15

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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.