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Finding the Fourth Proportional to 325,129.63, 487,834.58 and 135,627.30

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Solution

The fourth proportional to 325,129.63, 487,834.58 and 135,627.30 is: 203,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,129.63 : 487,834.58 = 135,627.30 : x
  2. Step 2: Convert to fraction form
    325,129.63/487,834.58 = 135,627.30/x
  3. Step 3: Cross multiply
    325,129.63x = 487,834.58 × 135,627.30
  4. Step 4: Simplify right side
    325,129.63x = 66,163,686,932.03
  5. Step 5: Solve for x
    x = 66,163,686,932.03/325,129.63
  6. Step 6: Final answer
    x = 203,499.41

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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.