Home / 215,998.04-324,141.70-89,638.40

Finding the Fourth Proportional to 215,998.04, 324,141.70 and 89,638.40

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Solution

The fourth proportional to 215,998.04, 324,141.70 and 89,638.40 is: 134,517.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,998.04 : 324,141.70 = 89,638.40 : x
  2. Step 2: Convert to fraction form
    215,998.04/324,141.70 = 89,638.40/x
  3. Step 3: Cross multiply
    215,998.04x = 324,141.70 × 89,638.40
  4. Step 4: Simplify right side
    215,998.04x = 29,055,543,361.28
  5. Step 5: Solve for x
    x = 29,055,543,361.28/215,998.04
  6. Step 6: Final answer
    x = 134,517.63

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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.