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Finding the Fourth Proportional to 438,799.20, 658,198.80 and 367,940.40

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Solution

The fourth proportional to 438,799.20, 658,198.80 and 367,940.40 is: 551,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,799.20 : 658,198.80 = 367,940.40 : x
  2. Step 2: Convert to fraction form
    438,799.20/658,198.80 = 367,940.40/x
  3. Step 3: Cross multiply
    438,799.20x = 658,198.80 × 367,940.40
  4. Step 4: Simplify right side
    438,799.20x = 242,177,929,751.52
  5. Step 5: Solve for x
    x = 242,177,929,751.52/438,799.20
  6. Step 6: Final answer
    x = 551,910.60

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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.