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Finding the Fourth Proportional to 490,881.44, 736,338.48 and 135,865.76

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Solution

The fourth proportional to 490,881.44, 736,338.48 and 135,865.76 is: 203,803.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,881.44 : 736,338.48 = 135,865.76 : x
  2. Step 2: Convert to fraction form
    490,881.44/736,338.48 = 135,865.76/x
  3. Step 3: Cross multiply
    490,881.44x = 736,338.48 × 135,865.76
  4. Step 4: Simplify right side
    490,881.44x = 100,043,187,202.45
  5. Step 5: Solve for x
    x = 100,043,187,202.45/490,881.44
  6. Step 6: Final answer
    x = 203,803.16

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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.