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Finding the Fourth Proportional to 260,355.20, 389,625.60 and 155,249.60

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Solution

The fourth proportional to 260,355.20, 389,625.60 and 155,249.60 is: 232,333.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,355.20 : 389,625.60 = 155,249.60 : x
  2. Step 2: Convert to fraction form
    260,355.20/389,625.60 = 155,249.60/x
  3. Step 3: Cross multiply
    260,355.20x = 389,625.60 × 155,249.60
  4. Step 4: Simplify right side
    260,355.20x = 60,489,218,549.76
  5. Step 5: Solve for x
    x = 60,489,218,549.76/260,355.20
  6. Step 6: Final answer
    x = 232,333.44

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1.5x scale

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.