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Finding the Fourth Proportional to 322,340.76, 483,562.98 and 135,405.72

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Solution

The fourth proportional to 322,340.76, 483,562.98 and 135,405.72 is: 203,130.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,340.76 : 483,562.98 = 135,405.72 : x
  2. Step 2: Convert to fraction form
    322,340.76/483,562.98 = 135,405.72/x
  3. Step 3: Cross multiply
    322,340.76x = 483,562.98 × 135,405.72
  4. Step 4: Simplify right side
    322,340.76x = 65,477,193,472.25
  5. Step 5: Solve for x
    x = 65,477,193,472.25/322,340.76
  6. Step 6: Final answer
    x = 203,130.36

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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.