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Finding the Fourth Proportional to 270,179.16, 405,385.38 and 145,495.32

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Solution

The fourth proportional to 270,179.16, 405,385.38 and 145,495.32 is: 218,305.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,179.16 : 405,385.38 = 145,495.32 : x
  2. Step 2: Convert to fraction form
    270,179.16/405,385.38 = 145,495.32/x
  3. Step 3: Cross multiply
    270,179.16x = 405,385.38 × 145,495.32
  4. Step 4: Simplify right side
    270,179.16x = 58,981,675,586.42
  5. Step 5: Solve for x
    x = 58,981,675,586.42/270,179.16
  6. Step 6: Final answer
    x = 218,305.79

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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.