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Finding the Fourth Proportional to 490,378.60, 735,567.90 and 194,890.60

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Solution

The fourth proportional to 490,378.60, 735,567.90 and 194,890.60 is: 292,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,378.60 : 735,567.90 = 194,890.60 : x
  2. Step 2: Convert to fraction form
    490,378.60/735,567.90 = 194,890.60/x
  3. Step 3: Cross multiply
    490,378.60x = 735,567.90 × 194,890.60
  4. Step 4: Simplify right side
    490,378.60x = 143,355,269,371.74
  5. Step 5: Solve for x
    x = 143,355,269,371.74/490,378.60
  6. Step 6: Final answer
    x = 292,335.90

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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.