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Finding the Fourth Proportional to 207,467.20, 311,200.80 and 189,096.40

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Solution

The fourth proportional to 207,467.20, 311,200.80 and 189,096.40 is: 283,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,467.20 : 311,200.80 = 189,096.40 : x
  2. Step 2: Convert to fraction form
    207,467.20/311,200.80 = 189,096.40/x
  3. Step 3: Cross multiply
    207,467.20x = 311,200.80 × 189,096.40
  4. Step 4: Simplify right side
    207,467.20x = 58,846,950,957.12
  5. Step 5: Solve for x
    x = 58,846,950,957.12/207,467.20
  6. Step 6: Final answer
    x = 283,644.60

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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.