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Finding the Fourth Proportional to 270,605.90, 405,900.47 and 128,553.44

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Solution

The fourth proportional to 270,605.90, 405,900.47 and 128,553.44 is: 192,826.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,605.90 : 405,900.47 = 128,553.44 : x
  2. Step 2: Convert to fraction form
    270,605.90/405,900.47 = 128,553.44/x
  3. Step 3: Cross multiply
    270,605.90x = 405,900.47 × 128,553.44
  4. Step 4: Simplify right side
    270,605.90x = 52,179,899,043.85
  5. Step 5: Solve for x
    x = 52,179,899,043.85/270,605.90
  6. Step 6: Final answer
    x = 192,826.17

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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.