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Finding the Fourth Proportional to 216,694.37, 324,916.56 and 66,894.59

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Solution

The fourth proportional to 216,694.37, 324,916.56 and 66,894.59 is: 100,303.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,694.37 : 324,916.56 = 66,894.59 : x
  2. Step 2: Convert to fraction form
    216,694.37/324,916.56 = 66,894.59/x
  3. Step 3: Cross multiply
    216,694.37x = 324,916.56 × 66,894.59
  4. Step 4: Simplify right side
    216,694.37x = 21,735,158,106.35
  5. Step 5: Solve for x
    x = 21,735,158,106.35/216,694.37
  6. Step 6: Final answer
    x = 100,303.29

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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.