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Finding the Fourth Proportional to 325,005.39, 487,243.85 and 135,606.83

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Solution

The fourth proportional to 325,005.39, 487,243.85 and 135,606.83 is: 203,299.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,005.39 : 487,243.85 = 135,606.83 : x
  2. Step 2: Convert to fraction form
    325,005.39/487,243.85 = 135,606.83/x
  3. Step 3: Cross multiply
    325,005.39x = 487,243.85 × 135,606.83
  4. Step 4: Simplify right side
    325,005.39x = 66,073,590,821.24
  5. Step 5: Solve for x
    x = 66,073,590,821.24/325,005.39
  6. Step 6: Final answer
    x = 203,299.98

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1.5x scale

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.