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Finding the Fourth Proportional to 312,772.79, 431,627.38 and 169,533.41

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Solution

The fourth proportional to 312,772.79, 431,627.38 and 169,533.41 is: 233,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,772.79 : 431,627.38 = 169,533.41 : x
  2. Step 2: Convert to fraction form
    312,772.79/431,627.38 = 169,533.41/x
  3. Step 3: Cross multiply
    312,772.79x = 431,627.38 × 169,533.41
  4. Step 4: Simplify right side
    312,772.79x = 73,175,258,998.80
  5. Step 5: Solve for x
    x = 73,175,258,998.80/312,772.79
  6. Step 6: Final answer
    x = 233,956.60

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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.