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Finding the Fourth Proportional to 216,549.37, 324,743.05 and 74,354.28

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Solution

The fourth proportional to 216,549.37, 324,743.05 and 74,354.28 is: 111,503.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,549.37 : 324,743.05 = 74,354.28 : x
  2. Step 2: Convert to fraction form
    216,549.37/324,743.05 = 74,354.28/x
  3. Step 3: Cross multiply
    216,549.37x = 324,743.05 × 74,354.28
  4. Step 4: Simplify right side
    216,549.37x = 24,146,035,667.75
  5. Step 5: Solve for x
    x = 24,146,035,667.75/216,549.37
  6. Step 6: Final answer
    x = 111,503.61

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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.