Home / 215,981.94-324,035.10-66,244.20

Finding the Fourth Proportional to 215,981.94, 324,035.10 and 66,244.20

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Solution

The fourth proportional to 215,981.94, 324,035.10 and 66,244.20 is: 99,385.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,981.94 : 324,035.10 = 66,244.20 : x
  2. Step 2: Convert to fraction form
    215,981.94/324,035.10 = 66,244.20/x
  3. Step 3: Cross multiply
    215,981.94x = 324,035.10 × 66,244.20
  4. Step 4: Simplify right side
    215,981.94x = 21,465,445,971.42
  5. Step 5: Solve for x
    x = 21,465,445,971.42/215,981.94
  6. Step 6: Final answer
    x = 99,385.37

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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.