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Finding the Fourth Proportional to 216,003.60, 324,102.60 and 103,640.40

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Solution

The fourth proportional to 216,003.60, 324,102.60 and 103,640.40 is: 155,507.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,003.60 : 324,102.60 = 103,640.40 : x
  2. Step 2: Convert to fraction form
    216,003.60/324,102.60 = 103,640.40/x
  3. Step 3: Cross multiply
    216,003.60x = 324,102.60 × 103,640.40
  4. Step 4: Simplify right side
    216,003.60x = 33,590,123,105.04
  5. Step 5: Solve for x
    x = 33,590,123,105.04/216,003.60
  6. Step 6: Final answer
    x = 155,507.24

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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.