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Finding the Fourth Proportional to 228,599.74, 315,456.69 and 126,618.31

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Solution

The fourth proportional to 228,599.74, 315,456.69 and 126,618.31 is: 174,727.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,599.74 : 315,456.69 = 126,618.31 : x
  2. Step 2: Convert to fraction form
    228,599.74/315,456.69 = 126,618.31/x
  3. Step 3: Cross multiply
    228,599.74x = 315,456.69 × 126,618.31
  4. Step 4: Simplify right side
    228,599.74x = 39,942,592,965.99
  5. Step 5: Solve for x
    x = 39,942,592,965.99/228,599.74
  6. Step 6: Final answer
    x = 174,727.20

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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.