Home / 278,986.20-384,996.42-151,665

Finding the Fourth Proportional to 278,986.20, 384,996.42 and 151,665

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Solution

The fourth proportional to 278,986.20, 384,996.42 and 151,665 is: 209,295.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,986.20 : 384,996.42 = 151,665 : x
  2. Step 2: Convert to fraction form
    278,986.20/384,996.42 = 151,665/x
  3. Step 3: Cross multiply
    278,986.20x = 384,996.42 × 151,665
  4. Step 4: Simplify right side
    278,986.20x = 58,390,482,039.30
  5. Step 5: Solve for x
    x = 58,390,482,039.30/278,986.20
  6. Step 6: Final answer
    x = 209,295.23

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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.