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Finding the Fourth Proportional to 228,493.36, 315,276 and 143,561.36

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Solution

The fourth proportional to 228,493.36, 315,276 and 143,561.36 is: 198,086.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,493.36 : 315,276 = 143,561.36 : x
  2. Step 2: Convert to fraction form
    228,493.36/315,276 = 143,561.36/x
  3. Step 3: Cross multiply
    228,493.36x = 315,276 × 143,561.36
  4. Step 4: Simplify right side
    228,493.36x = 45,261,451,335.36
  5. Step 5: Solve for x
    x = 45,261,451,335.36/228,493.36
  6. Step 6: Final answer
    x = 198,086.51

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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.