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Finding the Fourth Proportional to 325,173.60, 487,129.17 and 239,629.23

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Solution

The fourth proportional to 325,173.60, 487,129.17 and 239,629.23 is: 358,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,173.60 : 487,129.17 = 239,629.23 : x
  2. Step 2: Convert to fraction form
    325,173.60/487,129.17 = 239,629.23/x
  3. Step 3: Cross multiply
    325,173.60x = 487,129.17 × 239,629.23
  4. Step 4: Simplify right side
    325,173.60x = 116,730,387,917.64
  5. Step 5: Solve for x
    x = 116,730,387,917.64/325,173.60
  6. Step 6: Final answer
    x = 358,978.67

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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.