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Finding the Fourth Proportional to 490,866.22, 736,217.32 and 135,916.12

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Solution

The fourth proportional to 490,866.22, 736,217.32 and 135,916.12 is: 203,851.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,866.22 : 736,217.32 = 135,916.12 : x
  2. Step 2: Convert to fraction form
    490,866.22/736,217.32 = 135,916.12/x
  3. Step 3: Cross multiply
    490,866.22x = 736,217.32 × 135,916.12
  4. Step 4: Simplify right side
    490,866.22x = 100,063,801,611.20
  5. Step 5: Solve for x
    x = 100,063,801,611.20/490,866.22
  6. Step 6: Final answer
    x = 203,851.47

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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.