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Finding the Fourth Proportional to 216,039.70, 324,059.55 and 162,385.30

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Solution

The fourth proportional to 216,039.70, 324,059.55 and 162,385.30 is: 243,577.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,039.70 : 324,059.55 = 162,385.30 : x
  2. Step 2: Convert to fraction form
    216,039.70/324,059.55 = 162,385.30/x
  3. Step 3: Cross multiply
    216,039.70x = 324,059.55 × 162,385.30
  4. Step 4: Simplify right side
    216,039.70x = 52,622,507,244.62
  5. Step 5: Solve for x
    x = 52,622,507,244.62/216,039.70
  6. Step 6: Final answer
    x = 243,577.95

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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.