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Finding the Fourth Proportional to 305,998.20, 458,997.30 and 170,695.80

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Solution

The fourth proportional to 305,998.20, 458,997.30 and 170,695.80 is: 256,043.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,998.20 : 458,997.30 = 170,695.80 : x
  2. Step 2: Convert to fraction form
    305,998.20/458,997.30 = 170,695.80/x
  3. Step 3: Cross multiply
    305,998.20x = 458,997.30 × 170,695.80
  4. Step 4: Simplify right side
    305,998.20x = 78,348,911,321.34
  5. Step 5: Solve for x
    x = 78,348,911,321.34/305,998.20
  6. Step 6: Final answer
    x = 256,043.70

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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.