Home / 347,820.80-521,731.20-268,991.60

Finding the Fourth Proportional to 347,820.80, 521,731.20 and 268,991.60

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Solution

The fourth proportional to 347,820.80, 521,731.20 and 268,991.60 is: 403,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,820.80 : 521,731.20 = 268,991.60 : x
  2. Step 2: Convert to fraction form
    347,820.80/521,731.20 = 268,991.60/x
  3. Step 3: Cross multiply
    347,820.80x = 521,731.20 × 268,991.60
  4. Step 4: Simplify right side
    347,820.80x = 140,341,310,257.92
  5. Step 5: Solve for x
    x = 140,341,310,257.92/347,820.80
  6. Step 6: Final answer
    x = 403,487.40

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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.