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Finding the Fourth Proportional to 272,630.60, 408,071.10 and 213,144.20

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Solution

The fourth proportional to 272,630.60, 408,071.10 and 213,144.20 is: 319,032.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,630.60 : 408,071.10 = 213,144.20 : x
  2. Step 2: Convert to fraction form
    272,630.60/408,071.10 = 213,144.20/x
  3. Step 3: Cross multiply
    272,630.60x = 408,071.10 × 213,144.20
  4. Step 4: Simplify right side
    272,630.60x = 86,977,988,152.62
  5. Step 5: Solve for x
    x = 86,977,988,152.62/272,630.60
  6. Step 6: Final answer
    x = 319,032.38

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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.