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Finding the Fourth Proportional to 490,858.46, 736,288.70 and 135,873.53

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Solution

The fourth proportional to 490,858.46, 736,288.70 and 135,873.53 is: 203,810.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,858.46 : 736,288.70 = 135,873.53 : x
  2. Step 2: Convert to fraction form
    490,858.46/736,288.70 = 135,873.53/x
  3. Step 3: Cross multiply
    490,858.46x = 736,288.70 × 135,873.53
  4. Step 4: Simplify right side
    490,858.46x = 100,042,140,407.30
  5. Step 5: Solve for x
    x = 100,042,140,407.30/490,858.46
  6. Step 6: Final answer
    x = 203,810.57

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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.