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Finding the Fourth Proportional to 424,614.87, 636,922.31 and 109,072.08

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Solution

The fourth proportional to 424,614.87, 636,922.31 and 109,072.08 is: 163,608.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,614.87 : 636,922.31 = 109,072.08 : x
  2. Step 2: Convert to fraction form
    424,614.87/636,922.31 = 109,072.08/x
  3. Step 3: Cross multiply
    424,614.87x = 636,922.31 × 109,072.08
  4. Step 4: Simplify right side
    424,614.87x = 69,470,440,604.74
  5. Step 5: Solve for x
    x = 69,470,440,604.74/424,614.87
  6. Step 6: Final answer
    x = 163,608.12

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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.