Home / 278,988.20-384,999.18-151,667

Finding the Fourth Proportional to 278,988.20, 384,999.18 and 151,667

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Solution

The fourth proportional to 278,988.20, 384,999.18 and 151,667 is: 209,297.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,988.20 : 384,999.18 = 151,667 : x
  2. Step 2: Convert to fraction form
    278,988.20/384,999.18 = 151,667/x
  3. Step 3: Cross multiply
    278,988.20x = 384,999.18 × 151,667
  4. Step 4: Simplify right side
    278,988.20x = 58,391,670,633.06
  5. Step 5: Solve for x
    x = 58,391,670,633.06/278,988.20
  6. Step 6: Final answer
    x = 209,297.99

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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.