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Finding the Fourth Proportional to 326,055, 489,126.24 and 139,110.24

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Solution

The fourth proportional to 326,055, 489,126.24 and 139,110.24 is: 208,684.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,055 : 489,126.24 = 139,110.24 : x
  2. Step 2: Convert to fraction form
    326,055/489,126.24 = 139,110.24/x
  3. Step 3: Cross multiply
    326,055x = 489,126.24 × 139,110.24
  4. Step 4: Simplify right side
    326,055x = 68,042,468,636.70
  5. Step 5: Solve for x
    x = 68,042,468,636.70/326,055
  6. Step 6: Final answer
    x = 208,684.02

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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.