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Finding the Fourth Proportional to 325,304.40, 487,932.30 and 135,715.80

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Solution

The fourth proportional to 325,304.40, 487,932.30 and 135,715.80 is: 203,563.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,304.40 : 487,932.30 = 135,715.80 : x
  2. Step 2: Convert to fraction form
    325,304.40/487,932.30 = 135,715.80/x
  3. Step 3: Cross multiply
    325,304.40x = 487,932.30 × 135,715.80
  4. Step 4: Simplify right side
    325,304.40x = 66,220,122,440.34
  5. Step 5: Solve for x
    x = 66,220,122,440.34/325,304.40
  6. Step 6: Final answer
    x = 203,563.56

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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.