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Finding the Fourth Proportional to 325,286.60, 487,929.90 and 103,670.60

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Solution

The fourth proportional to 325,286.60, 487,929.90 and 103,670.60 is: 155,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,286.60 : 487,929.90 = 103,670.60 : x
  2. Step 2: Convert to fraction form
    325,286.60/487,929.90 = 103,670.60/x
  3. Step 3: Cross multiply
    325,286.60x = 487,929.90 × 103,670.60
  4. Step 4: Simplify right side
    325,286.60x = 50,583,985,490.94
  5. Step 5: Solve for x
    x = 50,583,985,490.94/325,286.60
  6. Step 6: Final answer
    x = 155,505.90

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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.