Home / 330,080.49-455,790.31-209,435.85

Finding the Fourth Proportional to 330,080.49, 455,790.31 and 209,435.85

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Solution

The fourth proportional to 330,080.49, 455,790.31 and 209,435.85 is: 289,198.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,080.49 : 455,790.31 = 209,435.85 : x
  2. Step 2: Convert to fraction form
    330,080.49/455,790.31 = 209,435.85/x
  3. Step 3: Cross multiply
    330,080.49x = 455,790.31 × 209,435.85
  4. Step 4: Simplify right side
    330,080.49x = 95,458,830,473.02
  5. Step 5: Solve for x
    x = 95,458,830,473.02/330,080.49
  6. Step 6: Final answer
    x = 289,198.65

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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.