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Finding the Fourth Proportional to 216,281.64, 324,323.56 and 66,469.72

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Solution

The fourth proportional to 216,281.64, 324,323.56 and 66,469.72 is: 99,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,281.64 : 324,323.56 = 66,469.72 : x
  2. Step 2: Convert to fraction form
    216,281.64/324,323.56 = 66,469.72/x
  3. Step 3: Cross multiply
    216,281.64x = 324,323.56 × 66,469.72
  4. Step 4: Simplify right side
    216,281.64x = 21,557,696,222.60
  5. Step 5: Solve for x
    x = 21,557,696,222.60/216,281.64
  6. Step 6: Final answer
    x = 99,674.19

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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.