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Finding the Fourth Proportional to 489,704.10, 734,556.15 and 134,717.55

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Solution

The fourth proportional to 489,704.10, 734,556.15 and 134,717.55 is: 202,076.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,704.10 : 734,556.15 = 134,717.55 : x
  2. Step 2: Convert to fraction form
    489,704.10/734,556.15 = 134,717.55/x
  3. Step 3: Cross multiply
    489,704.10x = 734,556.15 × 134,717.55
  4. Step 4: Simplify right side
    489,704.10x = 98,957,604,865.43
  5. Step 5: Solve for x
    x = 98,957,604,865.43/489,704.10
  6. Step 6: Final answer
    x = 202,076.33

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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.