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Finding the Fourth Proportional to 610,003.20, 915,004.80 and 189,321.60

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Solution

The fourth proportional to 610,003.20, 915,004.80 and 189,321.60 is: 283,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,003.20 : 915,004.80 = 189,321.60 : x
  2. Step 2: Convert to fraction form
    610,003.20/915,004.80 = 189,321.60/x
  3. Step 3: Cross multiply
    610,003.20x = 915,004.80 × 189,321.60
  4. Step 4: Simplify right side
    610,003.20x = 173,230,172,743.68
  5. Step 5: Solve for x
    x = 173,230,172,743.68/610,003.20
  6. Step 6: Final answer
    x = 283,982.40

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Similar ratio
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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.