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Finding the Fourth Proportional to 303,013.78, 418,161.09 and 168,886.42

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Solution

The fourth proportional to 303,013.78, 418,161.09 and 168,886.42 is: 233,064.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,013.78 : 418,161.09 = 168,886.42 : x
  2. Step 2: Convert to fraction form
    303,013.78/418,161.09 = 168,886.42/x
  3. Step 3: Cross multiply
    303,013.78x = 418,161.09 × 168,886.42
  4. Step 4: Simplify right side
    303,013.78x = 70,621,729,473.40
  5. Step 5: Solve for x
    x = 70,621,729,473.40/303,013.78
  6. Step 6: Final answer
    x = 233,064.42

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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.