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Finding the Fourth Proportional to 250,673.79, 345,930.39 and 143,243.56

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Solution

The fourth proportional to 250,673.79, 345,930.39 and 143,243.56 is: 197,676.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,673.79 : 345,930.39 = 143,243.56 : x
  2. Step 2: Convert to fraction form
    250,673.79/345,930.39 = 143,243.56/x
  3. Step 3: Cross multiply
    250,673.79x = 345,930.39 × 143,243.56
  4. Step 4: Simplify right side
    250,673.79x = 49,552,300,575.79
  5. Step 5: Solve for x
    x = 49,552,300,575.79/250,673.79
  6. Step 6: Final answer
    x = 197,676.44

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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.