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Finding the Fourth Proportional to 489,139.10, 733,672.20 and 204,756.20

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Solution

The fourth proportional to 489,139.10, 733,672.20 and 204,756.20 is: 307,119.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,139.10 : 733,672.20 = 204,756.20 : x
  2. Step 2: Convert to fraction form
    489,139.10/733,672.20 = 204,756.20/x
  3. Step 3: Cross multiply
    489,139.10x = 733,672.20 × 204,756.20
  4. Step 4: Simplify right side
    489,139.10x = 150,223,931,717.64
  5. Step 5: Solve for x
    x = 150,223,931,717.64/489,139.10
  6. Step 6: Final answer
    x = 307,119.04

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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.