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Finding the Fourth Proportional to 489,211.08, 733,737.90 and 134,142.72

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Solution

The fourth proportional to 489,211.08, 733,737.90 and 134,142.72 is: 201,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,211.08 : 733,737.90 = 134,142.72 : x
  2. Step 2: Convert to fraction form
    489,211.08/733,737.90 = 134,142.72/x
  3. Step 3: Cross multiply
    489,211.08x = 733,737.90 × 134,142.72
  4. Step 4: Simplify right side
    489,211.08x = 98,425,597,673.09
  5. Step 5: Solve for x
    x = 98,425,597,673.09/489,211.08
  6. Step 6: Final answer
    x = 201,192.49

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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.