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Finding the Fourth Proportional to 325,628.20, 488,528.70 and 115,244.20

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Solution

The fourth proportional to 325,628.20, 488,528.70 and 115,244.20 is: 172,896.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,628.20 : 488,528.70 = 115,244.20 : x
  2. Step 2: Convert to fraction form
    325,628.20/488,528.70 = 115,244.20/x
  3. Step 3: Cross multiply
    325,628.20x = 488,528.70 × 115,244.20
  4. Step 4: Simplify right side
    325,628.20x = 56,300,099,208.54
  5. Step 5: Solve for x
    x = 56,300,099,208.54/325,628.20
  6. Step 6: Final answer
    x = 172,896.88

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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.