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Finding the Fourth Proportional to 260,349.20, 389,616.60 and 155,243.60

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Solution

The fourth proportional to 260,349.20, 389,616.60 and 155,243.60 is: 232,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,349.20 : 389,616.60 = 155,243.60 : x
  2. Step 2: Convert to fraction form
    260,349.20/389,616.60 = 155,243.60/x
  3. Step 3: Cross multiply
    260,349.20x = 389,616.60 × 155,243.60
  4. Step 4: Simplify right side
    260,349.20x = 60,485,483,603.76
  5. Step 5: Solve for x
    x = 60,485,483,603.76/260,349.20
  6. Step 6: Final answer
    x = 232,324.45

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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.