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Finding the Fourth Proportional to 424,612.62, 636,918.94 and 109,069.84

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Solution

The fourth proportional to 424,612.62, 636,918.94 and 109,069.84 is: 163,604.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,612.62 : 636,918.94 = 109,069.84 : x
  2. Step 2: Convert to fraction form
    424,612.62/636,918.94 = 109,069.84/x
  3. Step 3: Cross multiply
    424,612.62x = 636,918.94 × 109,069.84
  4. Step 4: Simplify right side
    424,612.62x = 69,468,646,878.77
  5. Step 5: Solve for x
    x = 69,468,646,878.77/424,612.62
  6. Step 6: Final answer
    x = 163,604.76

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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.