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Finding the Fourth Proportional to 347,998.20, 521,997.30 and 170,851.20

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Solution

The fourth proportional to 347,998.20, 521,997.30 and 170,851.20 is: 256,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,998.20 : 521,997.30 = 170,851.20 : x
  2. Step 2: Convert to fraction form
    347,998.20/521,997.30 = 170,851.20/x
  3. Step 3: Cross multiply
    347,998.20x = 521,997.30 × 170,851.20
  4. Step 4: Simplify right side
    347,998.20x = 89,183,865,101.76
  5. Step 5: Solve for x
    x = 89,183,865,101.76/347,998.20
  6. Step 6: Final answer
    x = 256,276.80

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1.5x scale

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.