Home / 420,138,237.60-629,782,203.60-247,526,200.80

Finding the Fourth Proportional to 420,138,237.60, 629,782,203.60 and 247,526,200.80

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Solution

The fourth proportional to 420,138,237.60, 629,782,203.60 and 247,526,200.80 is: 371,038,820.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,138,237.60 : 629,782,203.60 = 247,526,200.80 : x
  2. Step 2: Convert to fraction form
    420,138,237.60/629,782,203.60 = 247,526,200.80/x
  3. Step 3: Cross multiply
    420,138,237.60x = 629,782,203.60 × 247,526,200.80
  4. Step 4: Simplify right side
    420,138,237.60x = 155,887,596,188,560,096
  5. Step 5: Solve for x
    x = 155,887,596,188,560,096/420,138,237.60
  6. Step 6: Final answer
    x = 371,038,820.65

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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.