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Finding the Fourth Proportional to 228,286.01, 315,043.98 and 126,309.81

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Solution

The fourth proportional to 228,286.01, 315,043.98 and 126,309.81 is: 174,312.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,286.01 : 315,043.98 = 126,309.81 : x
  2. Step 2: Convert to fraction form
    228,286.01/315,043.98 = 126,309.81/x
  3. Step 3: Cross multiply
    228,286.01x = 315,043.98 × 126,309.81
  4. Step 4: Simplify right side
    228,286.01x = 39,793,146,673.69
  5. Step 5: Solve for x
    x = 39,793,146,673.69/228,286.01
  6. Step 6: Final answer
    x = 174,312.68

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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.