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Finding the Fourth Proportional to 490,861.60, 736,210.38 and 135,911.50

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Solution

The fourth proportional to 490,861.60, 736,210.38 and 135,911.50 is: 203,844.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,861.60 : 736,210.38 = 135,911.50 : x
  2. Step 2: Convert to fraction form
    490,861.60/736,210.38 = 135,911.50/x
  3. Step 3: Cross multiply
    490,861.60x = 736,210.38 × 135,911.50
  4. Step 4: Simplify right side
    490,861.60x = 100,059,457,061.37
  5. Step 5: Solve for x
    x = 100,059,457,061.37/490,861.60
  6. Step 6: Final answer
    x = 203,844.54

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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.