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Finding the Fourth Proportional to 228,409.61, 315,208.02 and 126,444.48

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Solution

The fourth proportional to 228,409.61, 315,208.02 and 126,444.48 is: 174,494.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,409.61 : 315,208.02 = 126,444.48 : x
  2. Step 2: Convert to fraction form
    228,409.61/315,208.02 = 126,444.48/x
  3. Step 3: Cross multiply
    228,409.61x = 315,208.02 × 126,444.48
  4. Step 4: Simplify right side
    228,409.61x = 39,856,313,472.87
  5. Step 5: Solve for x
    x = 39,856,313,472.87/228,409.61
  6. Step 6: Final answer
    x = 174,494.91

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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.