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Finding the Fourth Proportional to 347,864.34, 520,861.17 and 220,816.83

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Solution

The fourth proportional to 347,864.34, 520,861.17 and 220,816.83 is: 330,631.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,864.34 : 520,861.17 = 220,816.83 : x
  2. Step 2: Convert to fraction form
    347,864.34/520,861.17 = 220,816.83/x
  3. Step 3: Cross multiply
    347,864.34x = 520,861.17 × 220,816.83
  4. Step 4: Simplify right side
    347,864.34x = 115,014,912,429.49
  5. Step 5: Solve for x
    x = 115,014,912,429.49/347,864.34
  6. Step 6: Final answer
    x = 330,631.51

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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.