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Finding the Fourth Proportional to 474,613.20, 711,529.56 and 221,768.64

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Solution

The fourth proportional to 474,613.20, 711,529.56 and 221,768.64 is: 332,470.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,613.20 : 711,529.56 = 221,768.64 : x
  2. Step 2: Convert to fraction form
    474,613.20/711,529.56 = 221,768.64/x
  3. Step 3: Cross multiply
    474,613.20x = 711,529.56 × 221,768.64
  4. Step 4: Simplify right side
    474,613.20x = 157,794,942,841.00
  5. Step 5: Solve for x
    x = 157,794,942,841.00/474,613.20
  6. Step 6: Final answer
    x = 332,470.62

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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.