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Finding the Fourth Proportional to 424,324.04, 636,438.54 and 108,788.36

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Solution

The fourth proportional to 424,324.04, 636,438.54 and 108,788.36 is: 163,170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,324.04 : 636,438.54 = 108,788.36 : x
  2. Step 2: Convert to fraction form
    424,324.04/636,438.54 = 108,788.36/x
  3. Step 3: Cross multiply
    424,324.04x = 636,438.54 × 108,788.36
  4. Step 4: Simplify right side
    424,324.04x = 69,237,105,007.39
  5. Step 5: Solve for x
    x = 69,237,105,007.39/424,324.04
  6. Step 6: Final answer
    x = 163,170.36

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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.