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Finding the Fourth Proportional to 228,671.69, 315,541.31 and 126,671.63

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Solution

The fourth proportional to 228,671.69, 315,541.31 and 126,671.63 is: 174,792.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,671.69 : 315,541.31 = 126,671.63 : x
  2. Step 2: Convert to fraction form
    228,671.69/315,541.31 = 126,671.63/x
  3. Step 3: Cross multiply
    228,671.69x = 315,541.31 × 126,671.63
  4. Step 4: Simplify right side
    228,671.69x = 39,970,129,858.97
  5. Step 5: Solve for x
    x = 39,970,129,858.97/228,671.69
  6. Step 6: Final answer
    x = 174,792.65

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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.