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Finding the Fourth Proportional to 351,391.64, 484,919.76 and 190,246.78

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Solution

The fourth proportional to 351,391.64, 484,919.76 and 190,246.78 is: 262,540.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,391.64 : 484,919.76 = 190,246.78 : x
  2. Step 2: Convert to fraction form
    351,391.64/484,919.76 = 190,246.78/x
  3. Step 3: Cross multiply
    351,391.64x = 484,919.76 × 190,246.78
  4. Step 4: Simplify right side
    351,391.64x = 92,254,422,898.37
  5. Step 5: Solve for x
    x = 92,254,422,898.37/351,391.64
  6. Step 6: Final answer
    x = 262,540.18

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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.