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Finding the Fourth Proportional to 326,556.84, 489,578.58 and 206,360.98

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Solution

The fourth proportional to 326,556.84, 489,578.58 and 206,360.98 is: 309,379.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,556.84 : 489,578.58 = 206,360.98 : x
  2. Step 2: Convert to fraction form
    326,556.84/489,578.58 = 206,360.98/x
  3. Step 3: Cross multiply
    326,556.84x = 489,578.58 × 206,360.98
  4. Step 4: Simplify right side
    326,556.84x = 101,029,915,555.81
  5. Step 5: Solve for x
    x = 101,029,915,555.81/326,556.84
  6. Step 6: Final answer
    x = 309,379.27

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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.