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Finding the Fourth Proportional to 275,780.72, 380,593.67 and 207,677.54

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Solution

The fourth proportional to 275,780.72, 380,593.67 and 207,677.54 is: 286,607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,780.72 : 380,593.67 = 207,677.54 : x
  2. Step 2: Convert to fraction form
    275,780.72/380,593.67 = 207,677.54/x
  3. Step 3: Cross multiply
    275,780.72x = 380,593.67 × 207,677.54
  4. Step 4: Simplify right side
    275,780.72x = 79,040,757,038.27
  5. Step 5: Solve for x
    x = 79,040,757,038.27/275,780.72
  6. Step 6: Final answer
    x = 286,607.26

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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.