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Finding the Fourth Proportional to 285,467.40, 428,201.10 and 179,944.20

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Solution

The fourth proportional to 285,467.40, 428,201.10 and 179,944.20 is: 269,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,467.40 : 428,201.10 = 179,944.20 : x
  2. Step 2: Convert to fraction form
    285,467.40/428,201.10 = 179,944.20/x
  3. Step 3: Cross multiply
    285,467.40x = 428,201.10 × 179,944.20
  4. Step 4: Simplify right side
    285,467.40x = 77,052,304,378.62
  5. Step 5: Solve for x
    x = 77,052,304,378.62/285,467.40
  6. Step 6: Final answer
    x = 269,916.30

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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.