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Finding the Fourth Proportional to 272,028.60, 408,042.30 and 72,349.02

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Solution

The fourth proportional to 272,028.60, 408,042.30 and 72,349.02 is: 108,523.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,028.60 : 408,042.30 = 72,349.02 : x
  2. Step 2: Convert to fraction form
    272,028.60/408,042.30 = 72,349.02/x
  3. Step 3: Cross multiply
    272,028.60x = 408,042.30 × 72,349.02
  4. Step 4: Simplify right side
    272,028.60x = 29,521,460,523.55
  5. Step 5: Solve for x
    x = 29,521,460,523.55/272,028.60
  6. Step 6: Final answer
    x = 108,523.37

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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.