Home / 321,285.60-481,928.40-163,821.60

Finding the Fourth Proportional to 321,285.60, 481,928.40 and 163,821.60

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Solution

The fourth proportional to 321,285.60, 481,928.40 and 163,821.60 is: 245,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,285.60 : 481,928.40 = 163,821.60 : x
  2. Step 2: Convert to fraction form
    321,285.60/481,928.40 = 163,821.60/x
  3. Step 3: Cross multiply
    321,285.60x = 481,928.40 × 163,821.60
  4. Step 4: Simplify right side
    321,285.60x = 78,950,281,573.44
  5. Step 5: Solve for x
    x = 78,950,281,573.44/321,285.60
  6. Step 6: Final answer
    x = 245,732.40

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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.