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Finding the Fourth Proportional to 883,640.20, 1,325,460.30 and 218,792.20

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Solution

The fourth proportional to 883,640.20, 1,325,460.30 and 218,792.20 is: 328,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,640.20 : 1,325,460.30 = 218,792.20 : x
  2. Step 2: Convert to fraction form
    883,640.20/1,325,460.30 = 218,792.20/x
  3. Step 3: Cross multiply
    883,640.20x = 1,325,460.30 × 218,792.20
  4. Step 4: Simplify right side
    883,640.20x = 290,000,375,049.66
  5. Step 5: Solve for x
    x = 290,000,375,049.66/883,640.20
  6. Step 6: Final answer
    x = 328,188.30

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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.