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Finding the Fourth Proportional to 285,019.20, 427,593.60 and 166,629.60

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Solution

The fourth proportional to 285,019.20, 427,593.60 and 166,629.60 is: 249,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,019.20 : 427,593.60 = 166,629.60 : x
  2. Step 2: Convert to fraction form
    285,019.20/427,593.60 = 166,629.60/x
  3. Step 3: Cross multiply
    285,019.20x = 427,593.60 × 166,629.60
  4. Step 4: Simplify right side
    285,019.20x = 71,249,750,530.56
  5. Step 5: Solve for x
    x = 71,249,750,530.56/285,019.20
  6. Step 6: Final answer
    x = 249,982.28

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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.