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Finding the Fourth Proportional to 351,530.63, 485,109.86 and 190,382.00

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Solution

The fourth proportional to 351,530.63, 485,109.86 and 190,382.00 is: 262,725.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,530.63 : 485,109.86 = 190,382.00 : x
  2. Step 2: Convert to fraction form
    351,530.63/485,109.86 = 190,382.00/x
  3. Step 3: Cross multiply
    351,530.63x = 485,109.86 × 190,382.00
  4. Step 4: Simplify right side
    351,530.63x = 92,356,183,059.96
  5. Step 5: Solve for x
    x = 92,356,183,059.96/351,530.63
  6. Step 6: Final answer
    x = 262,725.85

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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.