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Finding the Fourth Proportional to 326,375.12, 489,756.77 and 176,612.39

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Solution

The fourth proportional to 326,375.12, 489,756.77 and 176,612.39 is: 265,023.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,375.12 : 489,756.77 = 176,612.39 : x
  2. Step 2: Convert to fraction form
    326,375.12/489,756.77 = 176,612.39/x
  3. Step 3: Cross multiply
    326,375.12x = 489,756.77 × 176,612.39
  4. Step 4: Simplify right side
    326,375.12x = 86,497,110,336.53
  5. Step 5: Solve for x
    x = 86,497,110,336.53/326,375.12
  6. Step 6: Final answer
    x = 265,023.61

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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.