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Finding the Fourth Proportional to 489,018.55, 733,343.55 and 204,728.70

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Solution

The fourth proportional to 489,018.55, 733,343.55 and 204,728.70 is: 307,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,018.55 : 733,343.55 = 204,728.70 : x
  2. Step 2: Convert to fraction form
    489,018.55/733,343.55 = 204,728.70/x
  3. Step 3: Cross multiply
    489,018.55x = 733,343.55 × 204,728.70
  4. Step 4: Simplify right side
    489,018.55x = 150,136,471,644.89
  5. Step 5: Solve for x
    x = 150,136,471,644.89/489,018.55
  6. Step 6: Final answer
    x = 307,015.90

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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.