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Finding the Fourth Proportional to 353,158.80, 529,738.20 and 213,190.80

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Solution

The fourth proportional to 353,158.80, 529,738.20 and 213,190.80 is: 319,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,158.80 : 529,738.20 = 213,190.80 : x
  2. Step 2: Convert to fraction form
    353,158.80/529,738.20 = 213,190.80/x
  3. Step 3: Cross multiply
    353,158.80x = 529,738.20 × 213,190.80
  4. Step 4: Simplify right side
    353,158.80x = 112,935,310,648.56
  5. Step 5: Solve for x
    x = 112,935,310,648.56/353,158.80
  6. Step 6: Final answer
    x = 319,786.20

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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.