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Finding the Fourth Proportional to 325,853.90, 488,756.55 and 136,265.30

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Solution

The fourth proportional to 325,853.90, 488,756.55 and 136,265.30 is: 204,387.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,853.90 : 488,756.55 = 136,265.30 : x
  2. Step 2: Convert to fraction form
    325,853.90/488,756.55 = 136,265.30/x
  3. Step 3: Cross multiply
    325,853.90x = 488,756.55 × 136,265.30
  4. Step 4: Simplify right side
    325,853.90x = 66,600,557,912.72
  5. Step 5: Solve for x
    x = 66,600,557,912.72/325,853.90
  6. Step 6: Final answer
    x = 204,387.79

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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.