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Finding the Fourth Proportional to 326,415.21, 489,229.10 and 168,557.61

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Solution

The fourth proportional to 326,415.21, 489,229.10 and 168,557.61 is: 252,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,415.21 : 489,229.10 = 168,557.61 : x
  2. Step 2: Convert to fraction form
    326,415.21/489,229.10 = 168,557.61/x
  3. Step 3: Cross multiply
    326,415.21x = 489,229.10 × 168,557.61
  4. Step 4: Simplify right side
    326,415.21x = 82,463,286,995.66
  5. Step 5: Solve for x
    x = 82,463,286,995.66/326,415.21
  6. Step 6: Final answer
    x = 252,633.10

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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.