Home / 278,945.85-385,043.99-165,767.25

Finding the Fourth Proportional to 278,945.85, 385,043.99 and 165,767.25

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Solution

The fourth proportional to 278,945.85, 385,043.99 and 165,767.25 is: 228,817.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,945.85 : 385,043.99 = 165,767.25 : x
  2. Step 2: Convert to fraction form
    278,945.85/385,043.99 = 165,767.25/x
  3. Step 3: Cross multiply
    278,945.85x = 385,043.99 × 165,767.25
  4. Step 4: Simplify right side
    278,945.85x = 63,827,682,522.49
  5. Step 5: Solve for x
    x = 63,827,682,522.49/278,945.85
  6. Step 6: Final answer
    x = 228,817.47

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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.