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Finding the Fourth Proportional to 325,634.89, 487,861.82 and 318,549.01

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Solution

The fourth proportional to 325,634.89, 487,861.82 and 318,549.01 is: 477,245.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,634.89 : 487,861.82 = 318,549.01 : x
  2. Step 2: Convert to fraction form
    325,634.89/487,861.82 = 318,549.01/x
  3. Step 3: Cross multiply
    325,634.89x = 487,861.82 × 318,549.01
  4. Step 4: Simplify right side
    325,634.89x = 155,407,895,745.74
  5. Step 5: Solve for x
    x = 155,407,895,745.74/325,634.89
  6. Step 6: Final answer
    x = 477,245.84

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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.