Home / 278,129.23-416,907.61-109,581.39

Finding the Fourth Proportional to 278,129.23, 416,907.61 and 109,581.39

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Solution

The fourth proportional to 278,129.23, 416,907.61 and 109,581.39 is: 164,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,129.23 : 416,907.61 = 109,581.39 : x
  2. Step 2: Convert to fraction form
    278,129.23/416,907.61 = 109,581.39/x
  3. Step 3: Cross multiply
    278,129.23x = 416,907.61 × 109,581.39
  4. Step 4: Simplify right side
    278,129.23x = 45,685,315,131.42
  5. Step 5: Solve for x
    x = 45,685,315,131.42/278,129.23
  6. Step 6: Final answer
    x = 164,259.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.