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Finding the Fourth Proportional to 228,708.51, 315,613.02 and 126,733.08

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Solution

The fourth proportional to 228,708.51, 315,613.02 and 126,733.08 is: 174,889.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,708.51 : 315,613.02 = 126,733.08 : x
  2. Step 2: Convert to fraction form
    228,708.51/315,613.02 = 126,733.08/x
  3. Step 3: Cross multiply
    228,708.51x = 315,613.02 × 126,733.08
  4. Step 4: Simplify right side
    228,708.51x = 39,998,610,112.70
  5. Step 5: Solve for x
    x = 39,998,610,112.70/228,708.51
  6. Step 6: Final answer
    x = 174,889.03

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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.