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Finding the Fourth Proportional to 303,386.79, 418,493.39 and 196,020.13

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Solution

The fourth proportional to 303,386.79, 418,493.39 and 196,020.13 is: 270,391.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,386.79 : 418,493.39 = 196,020.13 : x
  2. Step 2: Convert to fraction form
    303,386.79/418,493.39 = 196,020.13/x
  3. Step 3: Cross multiply
    303,386.79x = 418,493.39 × 196,020.13
  4. Step 4: Simplify right side
    303,386.79x = 82,033,126,293.27
  5. Step 5: Solve for x
    x = 82,033,126,293.27/303,386.79
  6. Step 6: Final answer
    x = 270,391.23

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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.