Home / 278,991.20-385,003.32-151,670

Finding the Fourth Proportional to 278,991.20, 385,003.32 and 151,670

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Solution

The fourth proportional to 278,991.20, 385,003.32 and 151,670 is: 209,302.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,991.20 : 385,003.32 = 151,670 : x
  2. Step 2: Convert to fraction form
    278,991.20/385,003.32 = 151,670/x
  3. Step 3: Cross multiply
    278,991.20x = 385,003.32 × 151,670
  4. Step 4: Simplify right side
    278,991.20x = 58,393,453,544.40
  5. Step 5: Solve for x
    x = 58,393,453,544.40/278,991.20
  6. Step 6: Final answer
    x = 209,302.13

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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.