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Finding the Fourth Proportional to 272,334.55, 408,220.48 and 103,809.65

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Solution

The fourth proportional to 272,334.55, 408,220.48 and 103,809.65 is: 155,607.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,334.55 : 408,220.48 = 103,809.65 : x
  2. Step 2: Convert to fraction form
    272,334.55/408,220.48 = 103,809.65/x
  3. Step 3: Cross multiply
    272,334.55x = 408,220.48 × 103,809.65
  4. Step 4: Simplify right side
    272,334.55x = 42,377,222,591.48
  5. Step 5: Solve for x
    x = 42,377,222,591.48/272,334.55
  6. Step 6: Final answer
    x = 155,607.22

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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.