Home / 215,997.79-324,141.30-89,638.17

Finding the Fourth Proportional to 215,997.79, 324,141.30 and 89,638.17

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Solution

The fourth proportional to 215,997.79, 324,141.30 and 89,638.17 is: 134,517.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,997.79 : 324,141.30 = 89,638.17 : x
  2. Step 2: Convert to fraction form
    215,997.79/324,141.30 = 89,638.17/x
  3. Step 3: Cross multiply
    215,997.79x = 324,141.30 × 89,638.17
  4. Step 4: Simplify right side
    215,997.79x = 29,055,432,953.42
  5. Step 5: Solve for x
    x = 29,055,432,953.42/215,997.79
  6. Step 6: Final answer
    x = 134,517.27

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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.