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Finding the Fourth Proportional to 228,312.73, 315,063.43 and 126,336.43

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Solution

The fourth proportional to 228,312.73, 315,063.43 and 126,336.43 is: 174,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,312.73 : 315,063.43 = 126,336.43 : x
  2. Step 2: Convert to fraction form
    228,312.73/315,063.43 = 126,336.43/x
  3. Step 3: Cross multiply
    228,312.73x = 315,063.43 × 126,336.43
  4. Step 4: Simplify right side
    228,312.73x = 39,803,988,969.75
  5. Step 5: Solve for x
    x = 39,803,988,969.75/228,312.73
  6. Step 6: Final answer
    x = 174,339.77

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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.