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Finding the Fourth Proportional to 457,081.60, 685,622.40 and 220,885.60

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Solution

The fourth proportional to 457,081.60, 685,622.40 and 220,885.60 is: 331,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,081.60 : 685,622.40 = 220,885.60 : x
  2. Step 2: Convert to fraction form
    457,081.60/685,622.40 = 220,885.60/x
  3. Step 3: Cross multiply
    457,081.60x = 685,622.40 × 220,885.60
  4. Step 4: Simplify right side
    457,081.60x = 151,444,115,197.44
  5. Step 5: Solve for x
    x = 151,444,115,197.44/457,081.60
  6. Step 6: Final answer
    x = 331,328.40

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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.