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Finding the Fourth Proportional to 303,431.85, 418,499.26 and 194,546.59

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Solution

The fourth proportional to 303,431.85, 418,499.26 and 194,546.59 is: 268,322.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,431.85 : 418,499.26 = 194,546.59 : x
  2. Step 2: Convert to fraction form
    303,431.85/418,499.26 = 194,546.59/x
  3. Step 3: Cross multiply
    303,431.85x = 418,499.26 × 194,546.59
  4. Step 4: Simplify right side
    303,431.85x = 81,417,602,977.79
  5. Step 5: Solve for x
    x = 81,417,602,977.79/303,431.85
  6. Step 6: Final answer
    x = 268,322.54

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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.