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Finding the Fourth Proportional to 299,478.57, 412,739.13 and 248,221.35

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Solution

The fourth proportional to 299,478.57, 412,739.13 and 248,221.35 is: 342,096.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,478.57 : 412,739.13 = 248,221.35 : x
  2. Step 2: Convert to fraction form
    299,478.57/412,739.13 = 248,221.35/x
  3. Step 3: Cross multiply
    299,478.57x = 412,739.13 × 248,221.35
  4. Step 4: Simplify right side
    299,478.57x = 102,450,664,046.43
  5. Step 5: Solve for x
    x = 102,450,664,046.43/299,478.57
  6. Step 6: Final answer
    x = 342,096.81

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1.5x scale

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.