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Finding the Fourth Proportional to 312,767.48, 431,614.44 and 176,796.64

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Solution

The fourth proportional to 312,767.48, 431,614.44 and 176,796.64 is: 243,976.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,767.48 : 431,614.44 = 176,796.64 : x
  2. Step 2: Convert to fraction form
    312,767.48/431,614.44 = 176,796.64/x
  3. Step 3: Cross multiply
    312,767.48x = 431,614.44 × 176,796.64
  4. Step 4: Simplify right side
    312,767.48x = 76,307,982,767.48
  5. Step 5: Solve for x
    x = 76,307,982,767.48/312,767.48
  6. Step 6: Final answer
    x = 243,976.72

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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.