Home / 278,984.20-384,993.66-151,663

Finding the Fourth Proportional to 278,984.20, 384,993.66 and 151,663

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Solution

The fourth proportional to 278,984.20, 384,993.66 and 151,663 is: 209,292.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,984.20 : 384,993.66 = 151,663 : x
  2. Step 2: Convert to fraction form
    278,984.20/384,993.66 = 151,663/x
  3. Step 3: Cross multiply
    278,984.20x = 384,993.66 × 151,663
  4. Step 4: Simplify right side
    278,984.20x = 58,389,293,456.58
  5. Step 5: Solve for x
    x = 58,389,293,456.58/278,984.20
  6. Step 6: Final answer
    x = 209,292.47

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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.