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Finding the Fourth Proportional to 345,996.35, 518,816.77 and 156,353.98

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Solution

The fourth proportional to 345,996.35, 518,816.77 and 156,353.98 is: 234,450.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,996.35 : 518,816.77 = 156,353.98 : x
  2. Step 2: Convert to fraction form
    345,996.35/518,816.77 = 156,353.98/x
  3. Step 3: Cross multiply
    345,996.35x = 518,816.77 × 156,353.98
  4. Step 4: Simplify right side
    345,996.35x = 81,119,068,793.60
  5. Step 5: Solve for x
    x = 81,119,068,793.60/345,996.35
  6. Step 6: Final answer
    x = 234,450.65

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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.