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Finding the Fourth Proportional to 347,686.20, 520,751.70 and 339,910.20

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Solution

The fourth proportional to 347,686.20, 520,751.70 and 339,910.20 is: 509,105.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,686.20 : 520,751.70 = 339,910.20 : x
  2. Step 2: Convert to fraction form
    347,686.20/520,751.70 = 339,910.20/x
  3. Step 3: Cross multiply
    347,686.20x = 520,751.70 × 339,910.20
  4. Step 4: Simplify right side
    347,686.20x = 177,008,814,497.34
  5. Step 5: Solve for x
    x = 177,008,814,497.34/347,686.20
  6. Step 6: Final answer
    x = 509,105.09

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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.