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Finding the Fourth Proportional to 326,029.90, 489,044.85 and 220,276.30

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Solution

The fourth proportional to 326,029.90, 489,044.85 and 220,276.30 is: 330,414.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,029.90 : 489,044.85 = 220,276.30 : x
  2. Step 2: Convert to fraction form
    326,029.90/489,044.85 = 220,276.30/x
  3. Step 3: Cross multiply
    326,029.90x = 489,044.85 × 220,276.30
  4. Step 4: Simplify right side
    326,029.90x = 107,724,990,092.06
  5. Step 5: Solve for x
    x = 107,724,990,092.06/326,029.90
  6. Step 6: Final answer
    x = 330,414.45

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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.