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Finding the Fourth Proportional to 303,389.56, 418,500.80 and 194,455.09

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Solution

The fourth proportional to 303,389.56, 418,500.80 and 194,455.09 is: 268,234.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,389.56 : 418,500.80 = 194,455.09 : x
  2. Step 2: Convert to fraction form
    303,389.56/418,500.80 = 194,455.09/x
  3. Step 3: Cross multiply
    303,389.56x = 418,500.80 × 194,455.09
  4. Step 4: Simplify right side
    303,389.56x = 81,379,610,729.07
  5. Step 5: Solve for x
    x = 81,379,610,729.07/303,389.56
  6. Step 6: Final answer
    x = 268,234.71

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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.