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Finding the Fourth Proportional to 272,195.66, 408,300.78 and 103,694.60

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Solution

The fourth proportional to 272,195.66, 408,300.78 and 103,694.60 is: 155,544.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,195.66 : 408,300.78 = 103,694.60 : x
  2. Step 2: Convert to fraction form
    272,195.66/408,300.78 = 103,694.60/x
  3. Step 3: Cross multiply
    272,195.66x = 408,300.78 × 103,694.60
  4. Step 4: Simplify right side
    272,195.66x = 42,338,586,061.79
  5. Step 5: Solve for x
    x = 42,338,586,061.79/272,195.66
  6. Step 6: Final answer
    x = 155,544.68

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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.