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Finding the Fourth Proportional to 621,872.28, 932,709.30 and 222,438.60

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Solution

The fourth proportional to 621,872.28, 932,709.30 and 222,438.60 is: 333,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,872.28 : 932,709.30 = 222,438.60 : x
  2. Step 2: Convert to fraction form
    621,872.28/932,709.30 = 222,438.60/x
  3. Step 3: Cross multiply
    621,872.28x = 932,709.30 × 222,438.60
  4. Step 4: Simplify right side
    621,872.28x = 207,470,550,898.98
  5. Step 5: Solve for x
    x = 207,470,550,898.98/621,872.28
  6. Step 6: Final answer
    x = 333,622.45

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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.