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Finding the Fourth Proportional to 443,796.60, 666,132.30 and 219,410.40

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Solution

The fourth proportional to 443,796.60, 666,132.30 and 219,410.40 is: 329,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,796.60 : 666,132.30 = 219,410.40 : x
  2. Step 2: Convert to fraction form
    443,796.60/666,132.30 = 219,410.40/x
  3. Step 3: Cross multiply
    443,796.60x = 666,132.30 × 219,410.40
  4. Step 4: Simplify right side
    443,796.60x = 146,156,354,395.92
  5. Step 5: Solve for x
    x = 146,156,354,395.92/443,796.60
  6. Step 6: Final answer
    x = 329,331.85

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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.