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Finding the Fourth Proportional to 228,863.70, 343,321.15 and 71,090.90

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Solution

The fourth proportional to 228,863.70, 343,321.15 and 71,090.90 is: 106,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,863.70 : 343,321.15 = 71,090.90 : x
  2. Step 2: Convert to fraction form
    228,863.70/343,321.15 = 71,090.90/x
  3. Step 3: Cross multiply
    228,863.70x = 343,321.15 × 71,090.90
  4. Step 4: Simplify right side
    228,863.70x = 24,407,009,542.54
  5. Step 5: Solve for x
    x = 24,407,009,542.54/228,863.70
  6. Step 6: Final answer
    x = 106,644.30

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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.