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Finding the Fourth Proportional to 325,845.40, 488,743.80 and 136,256.80

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Solution

The fourth proportional to 325,845.40, 488,743.80 and 136,256.80 is: 204,375.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,845.40 : 488,743.80 = 136,256.80 : x
  2. Step 2: Convert to fraction form
    325,845.40/488,743.80 = 136,256.80/x
  3. Step 3: Cross multiply
    325,845.40x = 488,743.80 × 136,256.80
  4. Step 4: Simplify right side
    325,845.40x = 66,594,666,207.84
  5. Step 5: Solve for x
    x = 66,594,666,207.84/325,845.40
  6. Step 6: Final answer
    x = 204,375.04

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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.