Home / 306,556.32-459,857.46-81,911.70

Finding the Fourth Proportional to 306,556.32, 459,857.46 and 81,911.70

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Solution

The fourth proportional to 306,556.32, 459,857.46 and 81,911.70 is: 122,873.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,556.32 : 459,857.46 = 81,911.70 : x
  2. Step 2: Convert to fraction form
    306,556.32/459,857.46 = 81,911.70/x
  3. Step 3: Cross multiply
    306,556.32x = 459,857.46 × 81,911.70
  4. Step 4: Simplify right side
    306,556.32x = 37,667,706,306.28
  5. Step 5: Solve for x
    x = 37,667,706,306.28/306,556.32
  6. Step 6: Final answer
    x = 122,873.69

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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.