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Finding the Fourth Proportional to 399,993.80, 599,990.70 and 367,334.60

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Solution

The fourth proportional to 399,993.80, 599,990.70 and 367,334.60 is: 551,001.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,993.80 : 599,990.70 = 367,334.60 : x
  2. Step 2: Convert to fraction form
    399,993.80/599,990.70 = 367,334.60/x
  3. Step 3: Cross multiply
    399,993.80x = 599,990.70 × 367,334.60
  4. Step 4: Simplify right side
    399,993.80x = 220,397,343,788.22
  5. Step 5: Solve for x
    x = 220,397,343,788.22/399,993.80
  6. Step 6: Final answer
    x = 551,001.90

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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.