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Finding the Fourth Proportional to 326,031.20, 489,046.80 and 323,957.60

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Solution

The fourth proportional to 326,031.20, 489,046.80 and 323,957.60 is: 485,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,031.20 : 489,046.80 = 323,957.60 : x
  2. Step 2: Convert to fraction form
    326,031.20/489,046.80 = 323,957.60/x
  3. Step 3: Cross multiply
    326,031.20x = 489,046.80 × 323,957.60
  4. Step 4: Simplify right side
    326,031.20x = 158,430,427,615.68
  5. Step 5: Solve for x
    x = 158,430,427,615.68/326,031.20
  6. Step 6: Final answer
    x = 485,936.40

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Similar ratio
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1.5x scale

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.