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Finding the Fourth Proportional to 228,293.98, 315,039.62 and 126,316.78

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Solution

The fourth proportional to 228,293.98, 315,039.62 and 126,316.78 is: 174,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,293.98 : 315,039.62 = 126,316.78 : x
  2. Step 2: Convert to fraction form
    228,293.98/315,039.62 = 126,316.78/x
  3. Step 3: Cross multiply
    228,293.98x = 315,039.62 × 126,316.78
  4. Step 4: Simplify right side
    228,293.98x = 39,794,790,370.82
  5. Step 5: Solve for x
    x = 39,794,790,370.82/228,293.98
  6. Step 6: Final answer
    x = 174,313.80

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1.5x scale

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.