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Finding the Fourth Proportional to 298,727.20, 448,090.80 and 210,080.80

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Solution

The fourth proportional to 298,727.20, 448,090.80 and 210,080.80 is: 315,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,727.20 : 448,090.80 = 210,080.80 : x
  2. Step 2: Convert to fraction form
    298,727.20/448,090.80 = 210,080.80/x
  3. Step 3: Cross multiply
    298,727.20x = 448,090.80 × 210,080.80
  4. Step 4: Simplify right side
    298,727.20x = 94,135,273,736.64
  5. Step 5: Solve for x
    x = 94,135,273,736.64/298,727.20
  6. Step 6: Final answer
    x = 315,121.20

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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.