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Finding the Fourth Proportional to 272,632.60, 408,074.10 and 213,146.20

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Solution

The fourth proportional to 272,632.60, 408,074.10 and 213,146.20 is: 319,035.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,632.60 : 408,074.10 = 213,146.20 : x
  2. Step 2: Convert to fraction form
    272,632.60/408,074.10 = 213,146.20/x
  3. Step 3: Cross multiply
    272,632.60x = 408,074.10 × 213,146.20
  4. Step 4: Simplify right side
    272,632.60x = 86,979,443,733.42
  5. Step 5: Solve for x
    x = 86,979,443,733.42/272,632.60
  6. Step 6: Final answer
    x = 319,035.37

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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.