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Finding the Fourth Proportional to 315,399.43, 435,236.01 and 179,420.58

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Solution

The fourth proportional to 315,399.43, 435,236.01 and 179,420.58 is: 247,591.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,399.43 : 435,236.01 = 179,420.58 : x
  2. Step 2: Convert to fraction form
    315,399.43/435,236.01 = 179,420.58/x
  3. Step 3: Cross multiply
    315,399.43x = 435,236.01 × 179,420.58
  4. Step 4: Simplify right side
    315,399.43x = 78,090,297,351.09
  5. Step 5: Solve for x
    x = 78,090,297,351.09/315,399.43
  6. Step 6: Final answer
    x = 247,591.75

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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.