Home / 459,512.30-689,268.69-143,993.90

Finding the Fourth Proportional to 459,512.30, 689,268.69 and 143,993.90

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Solution

The fourth proportional to 459,512.30, 689,268.69 and 143,993.90 is: 215,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,512.30 : 689,268.69 = 143,993.90 : x
  2. Step 2: Convert to fraction form
    459,512.30/689,268.69 = 143,993.90/x
  3. Step 3: Cross multiply
    459,512.30x = 689,268.69 × 143,993.90
  4. Step 4: Simplify right side
    459,512.30x = 99,250,486,820.99
  5. Step 5: Solve for x
    x = 99,250,486,820.99/459,512.30
  6. Step 6: Final answer
    x = 215,990.93

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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.