Home / 326,050.50-489,119.49-139,105.74

Finding the Fourth Proportional to 326,050.50, 489,119.49 and 139,105.74

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Solution

The fourth proportional to 326,050.50, 489,119.49 and 139,105.74 is: 208,677.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,050.50 : 489,119.49 = 139,105.74 : x
  2. Step 2: Convert to fraction form
    326,050.50/489,119.49 = 139,105.74/x
  3. Step 3: Cross multiply
    326,050.50x = 489,119.49 × 139,105.74
  4. Step 4: Simplify right side
    326,050.50x = 68,039,328,604.87
  5. Step 5: Solve for x
    x = 68,039,328,604.87/326,050.50
  6. Step 6: Final answer
    x = 208,677.27

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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.