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Finding the Fourth Proportional to 203,297.40, 305,237.70 and 158,974.20

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Solution

The fourth proportional to 203,297.40, 305,237.70 and 158,974.20 is: 238,689.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,297.40 : 305,237.70 = 158,974.20 : x
  2. Step 2: Convert to fraction form
    203,297.40/305,237.70 = 158,974.20/x
  3. Step 3: Cross multiply
    203,297.40x = 305,237.70 × 158,974.20
  4. Step 4: Simplify right side
    203,297.40x = 48,524,919,167.34
  5. Step 5: Solve for x
    x = 48,524,919,167.34/203,297.40
  6. Step 6: Final answer
    x = 238,689.32

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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.