Home / 399,322.20-551,060.46-218,033.60

Finding the Fourth Proportional to 399,322.20, 551,060.46 and 218,033.60

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Solution

The fourth proportional to 399,322.20, 551,060.46 and 218,033.60 is: 300,884.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,322.20 : 551,060.46 = 218,033.60 : x
  2. Step 2: Convert to fraction form
    399,322.20/551,060.46 = 218,033.60/x
  3. Step 3: Cross multiply
    399,322.20x = 551,060.46 × 218,033.60
  4. Step 4: Simplify right side
    399,322.20x = 120,149,695,911.46
  5. Step 5: Solve for x
    x = 120,149,695,911.46/399,322.20
  6. Step 6: Final answer
    x = 300,884.09

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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.