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Finding the Fourth Proportional to 325,391.60, 487,941.60 and 125,645.60

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Solution

The fourth proportional to 325,391.60, 487,941.60 and 125,645.60 is: 188,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,391.60 : 487,941.60 = 125,645.60 : x
  2. Step 2: Convert to fraction form
    325,391.60/487,941.60 = 125,645.60/x
  3. Step 3: Cross multiply
    325,391.60x = 487,941.60 × 125,645.60
  4. Step 4: Simplify right side
    325,391.60x = 61,307,715,096.96
  5. Step 5: Solve for x
    x = 61,307,715,096.96/325,391.60
  6. Step 6: Final answer
    x = 188,412.10

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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.