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Finding the Fourth Proportional to 326,216.10, 489,324.15 and 293,556.90

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Solution

The fourth proportional to 326,216.10, 489,324.15 and 293,556.90 is: 440,335.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,216.10 : 489,324.15 = 293,556.90 : x
  2. Step 2: Convert to fraction form
    326,216.10/489,324.15 = 293,556.90/x
  3. Step 3: Cross multiply
    326,216.10x = 489,324.15 × 293,556.90
  4. Step 4: Simplify right side
    326,216.10x = 143,644,480,569.14
  5. Step 5: Solve for x
    x = 143,644,480,569.14/326,216.10
  6. Step 6: Final answer
    x = 440,335.35

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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.