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Finding the Fourth Proportional to 270,755.82, 405,892.50 and 128,513.34

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Solution

The fourth proportional to 270,755.82, 405,892.50 and 128,513.34 is: 192,655.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,755.82 : 405,892.50 = 128,513.34 : x
  2. Step 2: Convert to fraction form
    270,755.82/405,892.50 = 128,513.34/x
  3. Step 3: Cross multiply
    270,755.82x = 405,892.50 × 128,513.34
  4. Step 4: Simplify right side
    270,755.82x = 52,162,600,855.95
  5. Step 5: Solve for x
    x = 52,162,600,855.95/270,755.82
  6. Step 6: Final answer
    x = 192,655.51

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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.