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Finding the Fourth Proportional to 351,458.52, 485,015.09 and 190,313.57

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Solution

The fourth proportional to 351,458.52, 485,015.09 and 190,313.57 is: 262,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,458.52 : 485,015.09 = 190,313.57 : x
  2. Step 2: Convert to fraction form
    351,458.52/485,015.09 = 190,313.57/x
  3. Step 3: Cross multiply
    351,458.52x = 485,015.09 × 190,313.57
  4. Step 4: Simplify right side
    351,458.52x = 92,304,949,905.13
  5. Step 5: Solve for x
    x = 92,304,949,905.13/351,458.52
  6. Step 6: Final answer
    x = 262,633.98

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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.