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Finding the Fourth Proportional to 347,348.20, 520,892.70 and 136,942.60

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Solution

The fourth proportional to 347,348.20, 520,892.70 and 136,942.60 is: 205,362.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,348.20 : 520,892.70 = 136,942.60 : x
  2. Step 2: Convert to fraction form
    347,348.20/520,892.70 = 136,942.60/x
  3. Step 3: Cross multiply
    347,348.20x = 520,892.70 × 136,942.60
  4. Step 4: Simplify right side
    347,348.20x = 71,332,400,659.02
  5. Step 5: Solve for x
    x = 71,332,400,659.02/347,348.20
  6. Step 6: Final answer
    x = 205,362.80

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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.