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Finding the Fourth Proportional to 216,465.58, 324,740.90 and 66,680.38

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Solution

The fourth proportional to 216,465.58, 324,740.90 and 66,680.38 is: 100,033.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,465.58 : 324,740.90 = 66,680.38 : x
  2. Step 2: Convert to fraction form
    216,465.58/324,740.90 = 66,680.38/x
  3. Step 3: Cross multiply
    216,465.58x = 324,740.90 × 66,680.38
  4. Step 4: Simplify right side
    216,465.58x = 21,653,846,613.54
  5. Step 5: Solve for x
    x = 21,653,846,613.54/216,465.58
  6. Step 6: Final answer
    x = 100,033.67

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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.