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Finding the Fourth Proportional to 312,775.79, 431,631.52 and 169,536.41

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Solution

The fourth proportional to 312,775.79, 431,631.52 and 169,536.41 is: 233,960.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,775.79 : 431,631.52 = 169,536.41 : x
  2. Step 2: Convert to fraction form
    312,775.79/431,631.52 = 169,536.41/x
  3. Step 3: Cross multiply
    312,775.79x = 431,631.52 × 169,536.41
  4. Step 4: Simplify right side
    312,775.79x = 73,177,255,761.64
  5. Step 5: Solve for x
    x = 73,177,255,761.64/312,775.79
  6. Step 6: Final answer
    x = 233,960.74

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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.