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Finding the Fourth Proportional to 325,474.70, 488,139.15 and 213,937.70

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Solution

The fourth proportional to 325,474.70, 488,139.15 and 213,937.70 is: 320,858.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,474.70 : 488,139.15 = 213,937.70 : x
  2. Step 2: Convert to fraction form
    325,474.70/488,139.15 = 213,937.70/x
  3. Step 3: Cross multiply
    325,474.70x = 488,139.15 × 213,937.70
  4. Step 4: Simplify right side
    325,474.70x = 104,431,367,030.96
  5. Step 5: Solve for x
    x = 104,431,367,030.96/325,474.70
  6. Step 6: Final answer
    x = 320,858.63

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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.