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Finding the Fourth Proportional to 402,618.74, 603,912.33 and 136,379.24

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Solution

The fourth proportional to 402,618.74, 603,912.33 and 136,379.24 is: 204,563.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,618.74 : 603,912.33 = 136,379.24 : x
  2. Step 2: Convert to fraction form
    402,618.74/603,912.33 = 136,379.24/x
  3. Step 3: Cross multiply
    402,618.74x = 603,912.33 × 136,379.24
  4. Step 4: Simplify right side
    402,618.74x = 82,361,107,617.71
  5. Step 5: Solve for x
    x = 82,361,107,617.71/402,618.74
  6. Step 6: Final answer
    x = 204,563.52

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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.