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Finding the Fourth Proportional to 228,321.93, 315,079.56 and 126,347.33

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Solution

The fourth proportional to 228,321.93, 315,079.56 and 126,347.33 is: 174,356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,321.93 : 315,079.56 = 126,347.33 : x
  2. Step 2: Convert to fraction form
    228,321.93/315,079.56 = 126,347.33/x
  3. Step 3: Cross multiply
    228,321.93x = 315,079.56 × 126,347.33
  4. Step 4: Simplify right side
    228,321.93x = 39,809,459,568.18
  5. Step 5: Solve for x
    x = 39,809,459,568.18/228,321.93
  6. Step 6: Final answer
    x = 174,356.71

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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.