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Finding the Fourth Proportional to 315,361.28, 435,203.84 and 181,255.68

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Solution

The fourth proportional to 315,361.28, 435,203.84 and 181,255.68 is: 250,135.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,361.28 : 435,203.84 = 181,255.68 : x
  2. Step 2: Convert to fraction form
    315,361.28/435,203.84 = 181,255.68/x
  3. Step 3: Cross multiply
    315,361.28x = 435,203.84 × 181,255.68
  4. Step 4: Simplify right side
    315,361.28x = 78,883,167,957.81
  5. Step 5: Solve for x
    x = 78,883,167,957.81/315,361.28
  6. Step 6: Final answer
    x = 250,135.87

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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.