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Finding the Fourth Proportional to 491,302.67, 677,996.46 and 276,443.01

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Solution

The fourth proportional to 491,302.67, 677,996.46 and 276,443.01 is: 381,490.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,302.67 : 677,996.46 = 276,443.01 : x
  2. Step 2: Convert to fraction form
    491,302.67/677,996.46 = 276,443.01/x
  3. Step 3: Cross multiply
    491,302.67x = 677,996.46 × 276,443.01
  4. Step 4: Simplify right side
    491,302.67x = 187,427,382,171.75
  5. Step 5: Solve for x
    x = 187,427,382,171.75/491,302.67
  6. Step 6: Final answer
    x = 381,490.67

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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.