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Finding the Fourth Proportional to 491,206.01, 677,861.66 and 276,347.43

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Solution

The fourth proportional to 491,206.01, 677,861.66 and 276,347.43 is: 381,357.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,206.01 : 677,861.66 = 276,347.43 : x
  2. Step 2: Convert to fraction form
    491,206.01/677,861.66 = 276,347.43/x
  3. Step 3: Cross multiply
    491,206.01x = 677,861.66 × 276,347.43
  4. Step 4: Simplify right side
    491,206.01x = 187,325,328,327.40
  5. Step 5: Solve for x
    x = 187,325,328,327.40/491,206.01
  6. Step 6: Final answer
    x = 381,357.98

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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.