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Finding the Fourth Proportional to 665,391.56, 998,373.27 and 216,250.07

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Solution

The fourth proportional to 665,391.56, 998,373.27 and 216,250.07 is: 324,468.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,391.56 : 998,373.27 = 216,250.07 : x
  2. Step 2: Convert to fraction form
    665,391.56/998,373.27 = 216,250.07/x
  3. Step 3: Cross multiply
    665,391.56x = 998,373.27 × 216,250.07
  4. Step 4: Simplify right side
    665,391.56x = 215,898,289,523.63
  5. Step 5: Solve for x
    x = 215,898,289,523.63/665,391.56
  6. Step 6: Final answer
    x = 324,468.03

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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.