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Finding the Fourth Proportional to 300,989.40, 415,499.13 and 192,236.37

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Solution

The fourth proportional to 300,989.40, 415,499.13 and 192,236.37 is: 265,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,989.40 : 415,499.13 = 192,236.37 : x
  2. Step 2: Convert to fraction form
    300,989.40/415,499.13 = 192,236.37/x
  3. Step 3: Cross multiply
    300,989.40x = 415,499.13 × 192,236.37
  4. Step 4: Simplify right side
    300,989.40x = 79,874,044,489.36
  5. Step 5: Solve for x
    x = 79,874,044,489.36/300,989.40
  6. Step 6: Final answer
    x = 265,371.62

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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.