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Finding the Fourth Proportional to 285,417.20, 428,190.60 and 167,027.60

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Solution

The fourth proportional to 285,417.20, 428,190.60 and 167,027.60 is: 250,579.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,417.20 : 428,190.60 = 167,027.60 : x
  2. Step 2: Convert to fraction form
    285,417.20/428,190.60 = 167,027.60/x
  3. Step 3: Cross multiply
    285,417.20x = 428,190.60 × 167,027.60
  4. Step 4: Simplify right side
    285,417.20x = 71,519,648,260.56
  5. Step 5: Solve for x
    x = 71,519,648,260.56/285,417.20
  6. Step 6: Final answer
    x = 250,579.32

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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.