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Finding the Fourth Proportional to 228,399.93, 315,183.81 and 126,425.58

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Solution

The fourth proportional to 228,399.93, 315,183.81 and 126,425.58 is: 174,462.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,399.93 : 315,183.81 = 126,425.58 : x
  2. Step 2: Convert to fraction form
    228,399.93/315,183.81 = 126,425.58/x
  3. Step 3: Cross multiply
    228,399.93x = 315,183.81 × 126,425.58
  4. Step 4: Simplify right side
    228,399.93x = 39,847,295,985.86
  5. Step 5: Solve for x
    x = 39,847,295,985.86/228,399.93
  6. Step 6: Final answer
    x = 174,462.82

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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.