Home / 306,380.34-422,688.78-190,039.91

Finding the Fourth Proportional to 306,380.34, 422,688.78 and 190,039.91

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Solution

The fourth proportional to 306,380.34, 422,688.78 and 190,039.91 is: 262,183.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,380.34 : 422,688.78 = 190,039.91 : x
  2. Step 2: Convert to fraction form
    306,380.34/422,688.78 = 190,039.91/x
  3. Step 3: Cross multiply
    306,380.34x = 422,688.78 × 190,039.91
  4. Step 4: Simplify right side
    306,380.34x = 80,327,735,595.77
  5. Step 5: Solve for x
    x = 80,327,735,595.77/306,380.34
  6. Step 6: Final answer
    x = 262,183.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.