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Finding the Fourth Proportional to 270,604.80, 405,924.96 and 70,930.08

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Solution

The fourth proportional to 270,604.80, 405,924.96 and 70,930.08 is: 106,399.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,604.80 : 405,924.96 = 70,930.08 : x
  2. Step 2: Convert to fraction form
    270,604.80/405,924.96 = 70,930.08/x
  3. Step 3: Cross multiply
    270,604.80x = 405,924.96 × 70,930.08
  4. Step 4: Simplify right side
    270,604.80x = 28,792,289,886.80
  5. Step 5: Solve for x
    x = 28,792,289,886.80/270,604.80
  6. Step 6: Final answer
    x = 106,399.78

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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.