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Finding the Fourth Proportional to 300,783.78, 415,081.56 and 179,930.16

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Solution

The fourth proportional to 300,783.78, 415,081.56 and 179,930.16 is: 248,303.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,783.78 : 415,081.56 = 179,930.16 : x
  2. Step 2: Convert to fraction form
    300,783.78/415,081.56 = 179,930.16/x
  3. Step 3: Cross multiply
    300,783.78x = 415,081.56 × 179,930.16
  4. Step 4: Simplify right side
    300,783.78x = 74,685,691,503.85
  5. Step 5: Solve for x
    x = 74,685,691,503.85/300,783.78
  6. Step 6: Final answer
    x = 248,303.59

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1.5x scale

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.