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Finding the Fourth Proportional to 285,410.40, 428,120.40 and 108,000.96

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Solution

The fourth proportional to 285,410.40, 428,120.40 and 108,000.96 is: 162,003.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,410.40 : 428,120.40 = 108,000.96 : x
  2. Step 2: Convert to fraction form
    285,410.40/428,120.40 = 108,000.96/x
  3. Step 3: Cross multiply
    285,410.40x = 428,120.40 × 108,000.96
  4. Step 4: Simplify right side
    285,410.40x = 46,237,414,195.58
  5. Step 5: Solve for x
    x = 46,237,414,195.58/285,410.40
  6. Step 6: Final answer
    x = 162,003.26

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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.