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Finding the Fourth Proportional to 424,612.62, 636,918.93 and 109,069.83

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Solution

The fourth proportional to 424,612.62, 636,918.93 and 109,069.83 is: 163,604.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,612.62 : 636,918.93 = 109,069.83 : x
  2. Step 2: Convert to fraction form
    424,612.62/636,918.93 = 109,069.83/x
  3. Step 3: Cross multiply
    424,612.62x = 636,918.93 × 109,069.83
  4. Step 4: Simplify right side
    424,612.62x = 69,468,639,418.88
  5. Step 5: Solve for x
    x = 69,468,639,418.88/424,612.62
  6. Step 6: Final answer
    x = 163,604.75

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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.