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Finding the Fourth Proportional to 489,540.42, 734,176.89 and 134,469.90

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Solution

The fourth proportional to 489,540.42, 734,176.89 and 134,469.90 is: 201,668.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,540.42 : 734,176.89 = 134,469.90 : x
  2. Step 2: Convert to fraction form
    489,540.42/734,176.89 = 134,469.90/x
  3. Step 3: Cross multiply
    489,540.42x = 734,176.89 × 134,469.90
  4. Step 4: Simplify right side
    489,540.42x = 98,724,692,980.61
  5. Step 5: Solve for x
    x = 98,724,692,980.61/489,540.42
  6. Step 6: Final answer
    x = 201,668.11

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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.