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Finding the Fourth Proportional to 353,449.80, 529,008.30 and 274,134.60

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Solution

The fourth proportional to 353,449.80, 529,008.30 and 274,134.60 is: 410,297.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,449.80 : 529,008.30 = 274,134.60 : x
  2. Step 2: Convert to fraction form
    353,449.80/529,008.30 = 274,134.60/x
  3. Step 3: Cross multiply
    353,449.80x = 529,008.30 × 274,134.60
  4. Step 4: Simplify right side
    353,449.80x = 145,019,478,717.18
  5. Step 5: Solve for x
    x = 145,019,478,717.18/353,449.80
  6. Step 6: Final answer
    x = 410,297.24

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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.