Home / 215,998.56-324,142.44-89,638.92

Finding the Fourth Proportional to 215,998.56, 324,142.44 and 89,638.92

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Solution

The fourth proportional to 215,998.56, 324,142.44 and 89,638.92 is: 134,518.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,998.56 : 324,142.44 = 89,638.92 : x
  2. Step 2: Convert to fraction form
    215,998.56/324,142.44 = 89,638.92/x
  3. Step 3: Cross multiply
    215,998.56x = 324,142.44 × 89,638.92
  4. Step 4: Simplify right side
    215,998.56x = 29,055,778,247.76
  5. Step 5: Solve for x
    x = 29,055,778,247.76/215,998.56
  6. Step 6: Final answer
    x = 134,518.39

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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.