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Finding the Fourth Proportional to 325,873.90, 488,810.85 and 220,120.30

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Solution

The fourth proportional to 325,873.90, 488,810.85 and 220,120.30 is: 330,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,873.90 : 488,810.85 = 220,120.30 : x
  2. Step 2: Convert to fraction form
    325,873.90/488,810.85 = 220,120.30/x
  3. Step 3: Cross multiply
    325,873.90x = 488,810.85 × 220,120.30
  4. Step 4: Simplify right side
    325,873.90x = 107,597,190,945.26
  5. Step 5: Solve for x
    x = 107,597,190,945.26/325,873.90
  6. Step 6: Final answer
    x = 330,180.45

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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.