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Finding the Fourth Proportional to 228,354.39, 315,129.60 and 126,386.82

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Solution

The fourth proportional to 228,354.39, 315,129.60 and 126,386.82 is: 174,414.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,354.39 : 315,129.60 = 126,386.82 : x
  2. Step 2: Convert to fraction form
    228,354.39/315,129.60 = 126,386.82/x
  3. Step 3: Cross multiply
    228,354.39x = 315,129.60 × 126,386.82
  4. Step 4: Simplify right side
    228,354.39x = 39,828,228,031.87
  5. Step 5: Solve for x
    x = 39,828,228,031.87/228,354.39
  6. Step 6: Final answer
    x = 174,414.11

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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.