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Finding the Fourth Proportional to 272,099.80, 408,042.90 and 103,530.60

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Solution

The fourth proportional to 272,099.80, 408,042.90 and 103,530.60 is: 155,255.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,099.80 : 408,042.90 = 103,530.60 : x
  2. Step 2: Convert to fraction form
    272,099.80/408,042.90 = 103,530.60/x
  3. Step 3: Cross multiply
    272,099.80x = 408,042.90 × 103,530.60
  4. Step 4: Simplify right side
    272,099.80x = 42,244,926,262.74
  5. Step 5: Solve for x
    x = 42,244,926,262.74/272,099.80
  6. Step 6: Final answer
    x = 155,255.26

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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.