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Finding the Fourth Proportional to 393,066.62, 589,630.71 and 140,401.70

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Solution

The fourth proportional to 393,066.62, 589,630.71 and 140,401.70 is: 210,613.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,066.62 : 589,630.71 = 140,401.70 : x
  2. Step 2: Convert to fraction form
    393,066.62/589,630.71 = 140,401.70/x
  3. Step 3: Cross multiply
    393,066.62x = 589,630.71 × 140,401.70
  4. Step 4: Simplify right side
    393,066.62x = 82,785,154,056.21
  5. Step 5: Solve for x
    x = 82,785,154,056.21/393,066.62
  6. Step 6: Final answer
    x = 210,613.54

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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.