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Finding the Fourth Proportional to 303,399.42, 418,689.42 and 176,072.28

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Solution

The fourth proportional to 303,399.42, 418,689.42 and 176,072.28 is: 242,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,399.42 : 418,689.42 = 176,072.28 : x
  2. Step 2: Convert to fraction form
    303,399.42/418,689.42 = 176,072.28/x
  3. Step 3: Cross multiply
    303,399.42x = 418,689.42 × 176,072.28
  4. Step 4: Simplify right side
    303,399.42x = 73,719,600,791.28
  5. Step 5: Solve for x
    x = 73,719,600,791.28/303,399.42
  6. Step 6: Final answer
    x = 242,978.71

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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.