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Finding the Fourth Proportional to 479,967, 720,081.54 and 210,046.08

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Solution

The fourth proportional to 479,967, 720,081.54 and 210,046.08 is: 315,126.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,967 : 720,081.54 = 210,046.08 : x
  2. Step 2: Convert to fraction form
    479,967/720,081.54 = 210,046.08/x
  3. Step 3: Cross multiply
    479,967x = 720,081.54 × 210,046.08
  4. Step 4: Simplify right side
    479,967x = 151,250,304,757.36
  5. Step 5: Solve for x
    x = 151,250,304,757.36/479,967
  6. Step 6: Final answer
    x = 315,126.47

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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.