Home / 443,722.20-665,129.70-218,736.60

Finding the Fourth Proportional to 443,722.20, 665,129.70 and 218,736.60

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Solution

The fourth proportional to 443,722.20, 665,129.70 and 218,736.60 is: 327,881.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,722.20 : 665,129.70 = 218,736.60 : x
  2. Step 2: Convert to fraction form
    443,722.20/665,129.70 = 218,736.60/x
  3. Step 3: Cross multiply
    443,722.20x = 665,129.70 × 218,736.60
  4. Step 4: Simplify right side
    443,722.20x = 145,488,209,137.02
  5. Step 5: Solve for x
    x = 145,488,209,137.02/443,722.20
  6. Step 6: Final answer
    x = 327,881.29

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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.