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Finding the Fourth Proportional to 326,630.63, 489,976.86 and 126,966.44

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Solution

The fourth proportional to 326,630.63, 489,976.86 and 126,966.44 is: 190,461.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,630.63 : 489,976.86 = 126,966.44 : x
  2. Step 2: Convert to fraction form
    326,630.63/489,976.86 = 126,966.44/x
  3. Step 3: Cross multiply
    326,630.63x = 489,976.86 × 126,966.44
  4. Step 4: Simplify right side
    326,630.63x = 62,210,615,146.69
  5. Step 5: Solve for x
    x = 62,210,615,146.69/326,630.63
  6. Step 6: Final answer
    x = 190,461.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.