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Finding the Fourth Proportional to 270,605.72, 405,900.19 and 128,553.22

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Solution

The fourth proportional to 270,605.72, 405,900.19 and 128,553.22 is: 192,825.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,605.72 : 405,900.19 = 128,553.22 : x
  2. Step 2: Convert to fraction form
    270,605.72/405,900.19 = 128,553.22/x
  3. Step 3: Cross multiply
    270,605.72x = 405,900.19 × 128,553.22
  4. Step 4: Simplify right side
    270,605.72x = 52,179,775,086.98
  5. Step 5: Solve for x
    x = 52,179,775,086.98/270,605.72
  6. Step 6: Final answer
    x = 192,825.84

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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.