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Finding the Fourth Proportional to 371,998.80, 557,998.20 and 222,699.60

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Solution

The fourth proportional to 371,998.80, 557,998.20 and 222,699.60 is: 334,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,998.80 : 557,998.20 = 222,699.60 : x
  2. Step 2: Convert to fraction form
    371,998.80/557,998.20 = 222,699.60/x
  3. Step 3: Cross multiply
    371,998.80x = 557,998.20 × 222,699.60
  4. Step 4: Simplify right side
    371,998.80x = 124,265,975,940.72
  5. Step 5: Solve for x
    x = 124,265,975,940.72/371,998.80
  6. Step 6: Final answer
    x = 334,049.40

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Similar ratio
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1.5x scale

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.