Home / 215,981.21-324,033.98-66,243.47

Finding the Fourth Proportional to 215,981.21, 324,033.98 and 66,243.47

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Solution

The fourth proportional to 215,981.21, 324,033.98 and 66,243.47 is: 99,384.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,981.21 : 324,033.98 = 66,243.47 : x
  2. Step 2: Convert to fraction form
    215,981.21/324,033.98 = 66,243.47/x
  3. Step 3: Cross multiply
    215,981.21x = 324,033.98 × 66,243.47
  4. Step 4: Simplify right side
    215,981.21x = 21,465,133,778.55
  5. Step 5: Solve for x
    x = 21,465,133,778.55/215,981.21
  6. Step 6: Final answer
    x = 99,384.27

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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.