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Finding the Fourth Proportional to 445,338.18, 667,655.91 and 220,775.94

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Solution

The fourth proportional to 445,338.18, 667,655.91 and 220,775.94 is: 330,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,338.18 : 667,655.91 = 220,775.94 : x
  2. Step 2: Convert to fraction form
    445,338.18/667,655.91 = 220,775.94/x
  3. Step 3: Cross multiply
    445,338.18x = 667,655.91 × 220,775.94
  4. Step 4: Simplify right side
    445,338.18x = 147,402,361,126.81
  5. Step 5: Solve for x
    x = 147,402,361,126.81/445,338.18
  6. Step 6: Final answer
    x = 330,989.72

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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.