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Finding the Fourth Proportional to 373,825.60, 515,861.30 and 212,665.48

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Solution

The fourth proportional to 373,825.60, 515,861.30 and 212,665.48 is: 293,468.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,825.60 : 515,861.30 = 212,665.48 : x
  2. Step 2: Convert to fraction form
    373,825.60/515,861.30 = 212,665.48/x
  3. Step 3: Cross multiply
    373,825.60x = 515,861.30 × 212,665.48
  4. Step 4: Simplify right side
    373,825.60x = 109,705,890,977.92
  5. Step 5: Solve for x
    x = 109,705,890,977.92/373,825.60
  6. Step 6: Final answer
    x = 293,468.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.