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Finding the Fourth Proportional to 216,314.46, 324,483.24 and 66,657.54

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Solution

The fourth proportional to 216,314.46, 324,483.24 and 66,657.54 is: 99,989.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,314.46 : 324,483.24 = 66,657.54 : x
  2. Step 2: Convert to fraction form
    216,314.46/324,483.24 = 66,657.54/x
  3. Step 3: Cross multiply
    216,314.46x = 324,483.24 × 66,657.54
  4. Step 4: Simplify right side
    216,314.46x = 21,629,254,549.63
  5. Step 5: Solve for x
    x = 21,629,254,549.63/216,314.46
  6. Step 6: Final answer
    x = 99,989.87

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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.