Home / 459,517.30-689,276.20-143,998.90

Finding the Fourth Proportional to 459,517.30, 689,276.20 and 143,998.90

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Solution

The fourth proportional to 459,517.30, 689,276.20 and 143,998.90 is: 215,998.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,517.30 : 689,276.20 = 143,998.90 : x
  2. Step 2: Convert to fraction form
    459,517.30/689,276.20 = 143,998.90/x
  3. Step 3: Cross multiply
    459,517.30x = 689,276.20 × 143,998.90
  4. Step 4: Simplify right side
    459,517.30x = 99,255,014,596.18
  5. Step 5: Solve for x
    x = 99,255,014,596.18/459,517.30
  6. Step 6: Final answer
    x = 215,998.43

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Similar ratio
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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.