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Finding the Fourth Proportional to 307,345.94, 424,126.28 and 178,286.97

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Solution

The fourth proportional to 307,345.94, 424,126.28 and 178,286.97 is: 246,029.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,345.94 : 424,126.28 = 178,286.97 : x
  2. Step 2: Convert to fraction form
    307,345.94/424,126.28 = 178,286.97/x
  3. Step 3: Cross multiply
    307,345.94x = 424,126.28 × 178,286.97
  4. Step 4: Simplify right side
    307,345.94x = 75,616,190,391.90
  5. Step 5: Solve for x
    x = 75,616,190,391.90/307,345.94
  6. Step 6: Final answer
    x = 246,029.57

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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.