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Finding the Fourth Proportional to 305,900.87, 422,193.76 and 254,832.71

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Solution

The fourth proportional to 305,900.87, 422,193.76 and 254,832.71 is: 351,711.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,900.87 : 422,193.76 = 254,832.71 : x
  2. Step 2: Convert to fraction form
    305,900.87/422,193.76 = 254,832.71/x
  3. Step 3: Cross multiply
    305,900.87x = 422,193.76 × 254,832.71
  4. Step 4: Simplify right side
    305,900.87x = 107,588,780,005.89
  5. Step 5: Solve for x
    x = 107,588,780,005.89/305,900.87
  6. Step 6: Final answer
    x = 351,711.26

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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.