Home / 278,945.10-385,042.95-165,766.50

Finding the Fourth Proportional to 278,945.10, 385,042.95 and 165,766.50

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Solution

The fourth proportional to 278,945.10, 385,042.95 and 165,766.50 is: 228,816.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,945.10 : 385,042.95 = 165,766.50 : x
  2. Step 2: Convert to fraction form
    278,945.10/385,042.95 = 165,766.50/x
  3. Step 3: Cross multiply
    278,945.10x = 385,042.95 × 165,766.50
  4. Step 4: Simplify right side
    278,945.10x = 63,827,222,171.18
  5. Step 5: Solve for x
    x = 63,827,222,171.18/278,945.10
  6. Step 6: Final answer
    x = 228,816.43

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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.