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Finding the Fourth Proportional to 216,317.46, 324,487.74 and 66,660.54

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Solution

The fourth proportional to 216,317.46, 324,487.74 and 66,660.54 is: 99,994.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,317.46 : 324,487.74 = 66,660.54 : x
  2. Step 2: Convert to fraction form
    216,317.46/324,487.74 = 66,660.54/x
  3. Step 3: Cross multiply
    216,317.46x = 324,487.74 × 66,660.54
  4. Step 4: Simplify right side
    216,317.46x = 21,630,527,971.78
  5. Step 5: Solve for x
    x = 21,630,527,971.78/216,317.46
  6. Step 6: Final answer
    x = 99,994.37

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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.