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Finding the Fourth Proportional to 490,322.60, 735,338.10 and 190,630.70

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Solution

The fourth proportional to 490,322.60, 735,338.10 and 190,630.70 is: 285,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,322.60 : 735,338.10 = 190,630.70 : x
  2. Step 2: Convert to fraction form
    490,322.60/735,338.10 = 190,630.70/x
  3. Step 3: Cross multiply
    490,322.60x = 735,338.10 × 190,630.70
  4. Step 4: Simplify right side
    490,322.60x = 140,178,016,739.67
  5. Step 5: Solve for x
    x = 140,178,016,739.67/490,322.60
  6. Step 6: Final answer
    x = 285,889.36

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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.