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Finding the Fourth Proportional to 347,213.80, 479,152.74 and 196,311.40

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Solution

The fourth proportional to 347,213.80, 479,152.74 and 196,311.40 is: 270,908.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,213.80 : 479,152.74 = 196,311.40 : x
  2. Step 2: Convert to fraction form
    347,213.80/479,152.74 = 196,311.40/x
  3. Step 3: Cross multiply
    347,213.80x = 479,152.74 × 196,311.40
  4. Step 4: Simplify right side
    347,213.80x = 94,063,145,203.24
  5. Step 5: Solve for x
    x = 94,063,145,203.24/347,213.80
  6. Step 6: Final answer
    x = 270,908.43

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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.