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Finding the Fourth Proportional to 529,612.80, 793,749.60 and 213,892.80

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Solution

The fourth proportional to 529,612.80, 793,749.60 and 213,892.80 is: 320,568.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,612.80 : 793,749.60 = 213,892.80 : x
  2. Step 2: Convert to fraction form
    529,612.80/793,749.60 = 213,892.80/x
  3. Step 3: Cross multiply
    529,612.80x = 793,749.60 × 213,892.80
  4. Step 4: Simplify right side
    529,612.80x = 169,777,324,442.88
  5. Step 5: Solve for x
    x = 169,777,324,442.88/529,612.80
  6. Step 6: Final answer
    x = 320,568.77

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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.