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Finding the Fourth Proportional to 490,303.60, 735,309.60 and 190,611.70

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Solution

The fourth proportional to 490,303.60, 735,309.60 and 190,611.70 is: 285,860.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,303.60 : 735,309.60 = 190,611.70 : x
  2. Step 2: Convert to fraction form
    490,303.60/735,309.60 = 190,611.70/x
  3. Step 3: Cross multiply
    490,303.60x = 735,309.60 × 190,611.70
  4. Step 4: Simplify right side
    490,303.60x = 140,158,612,882.32
  5. Step 5: Solve for x
    x = 140,158,612,882.32/490,303.60
  6. Step 6: Final answer
    x = 285,860.87

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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.