Home / 309,743.72-427,576.82-209,277.80

Finding the Fourth Proportional to 309,743.72, 427,576.82 and 209,277.80

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Solution

The fourth proportional to 309,743.72, 427,576.82 and 209,277.80 is: 288,891.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,743.72 : 427,576.82 = 209,277.80 : x
  2. Step 2: Convert to fraction form
    309,743.72/427,576.82 = 209,277.80/x
  3. Step 3: Cross multiply
    309,743.72x = 427,576.82 × 209,277.80
  4. Step 4: Simplify right side
    309,743.72x = 89,482,336,220.60
  5. Step 5: Solve for x
    x = 89,482,336,220.60/309,743.72
  6. Step 6: Final answer
    x = 288,891.53

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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.