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Finding the Fourth Proportional to 306,133.87, 422,435.74 and 170,151.67

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Solution

The fourth proportional to 306,133.87, 422,435.74 and 170,151.67 is: 234,793.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,133.87 : 422,435.74 = 170,151.67 : x
  2. Step 2: Convert to fraction form
    306,133.87/422,435.74 = 170,151.67/x
  3. Step 3: Cross multiply
    306,133.87x = 422,435.74 × 170,151.67
  4. Step 4: Simplify right side
    306,133.87x = 71,878,146,628.69
  5. Step 5: Solve for x
    x = 71,878,146,628.69/306,133.87
  6. Step 6: Final answer
    x = 234,793.19

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1.5x scale

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.