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Finding the Fourth Proportional to 445,459.24, 667,871.44 and 208,672.76

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Solution

The fourth proportional to 445,459.24, 667,871.44 and 208,672.76 is: 312,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,459.24 : 667,871.44 = 208,672.76 : x
  2. Step 2: Convert to fraction form
    445,459.24/667,871.44 = 208,672.76/x
  3. Step 3: Cross multiply
    445,459.24x = 667,871.44 × 208,672.76
  4. Step 4: Simplify right side
    445,459.24x = 139,366,576,709.97
  5. Step 5: Solve for x
    x = 139,366,576,709.97/445,459.24
  6. Step 6: Final answer
    x = 312,860.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.