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Finding the Fourth Proportional to 662,517.20, 993,775.80 and 219,285.20

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Solution

The fourth proportional to 662,517.20, 993,775.80 and 219,285.20 is: 328,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,517.20 : 993,775.80 = 219,285.20 : x
  2. Step 2: Convert to fraction form
    662,517.20/993,775.80 = 219,285.20/x
  3. Step 3: Cross multiply
    662,517.20x = 993,775.80 × 219,285.20
  4. Step 4: Simplify right side
    662,517.20x = 217,920,325,058.16
  5. Step 5: Solve for x
    x = 217,920,325,058.16/662,517.20
  6. Step 6: Final answer
    x = 328,927.80

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Double scale
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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.