Home / 278,987.20-384,997.80-151,666

Finding the Fourth Proportional to 278,987.20, 384,997.80 and 151,666

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Solution

The fourth proportional to 278,987.20, 384,997.80 and 151,666 is: 209,296.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,987.20 : 384,997.80 = 151,666 : x
  2. Step 2: Convert to fraction form
    278,987.20/384,997.80 = 151,666/x
  3. Step 3: Cross multiply
    278,987.20x = 384,997.80 × 151,666
  4. Step 4: Simplify right side
    278,987.20x = 58,391,076,334.80
  5. Step 5: Solve for x
    x = 58,391,076,334.80/278,987.20
  6. Step 6: Final answer
    x = 209,296.61

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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.