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Finding the Fourth Proportional to 270,467.52, 405,171.36 and 128,034.24

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Solution

The fourth proportional to 270,467.52, 405,171.36 and 128,034.24 is: 191,800.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,467.52 : 405,171.36 = 128,034.24 : x
  2. Step 2: Convert to fraction form
    270,467.52/405,171.36 = 128,034.24/x
  3. Step 3: Cross multiply
    270,467.52x = 405,171.36 × 128,034.24
  4. Step 4: Simplify right side
    270,467.52x = 51,875,807,147.37
  5. Step 5: Solve for x
    x = 51,875,807,147.37/270,467.52
  6. Step 6: Final answer
    x = 191,800.51

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1.5x scale

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.