Home / 217,680.21-300,396.20-122,184.45

Finding the Fourth Proportional to 217,680.21, 300,396.20 and 122,184.45

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Solution

The fourth proportional to 217,680.21, 300,396.20 and 122,184.45 is: 168,613.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,680.21 : 300,396.20 = 122,184.45 : x
  2. Step 2: Convert to fraction form
    217,680.21/300,396.20 = 122,184.45/x
  3. Step 3: Cross multiply
    217,680.21x = 300,396.20 × 122,184.45
  4. Step 4: Simplify right side
    217,680.21x = 36,703,743,868.17
  5. Step 5: Solve for x
    x = 36,703,743,868.17/217,680.21
  6. Step 6: Final answer
    x = 168,613.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.