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Finding the Fourth Proportional to 554,967.56, 765,857.22 and 300,318.68

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Solution

The fourth proportional to 554,967.56, 765,857.22 and 300,318.68 is: 414,440.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,967.56 : 765,857.22 = 300,318.68 : x
  2. Step 2: Convert to fraction form
    554,967.56/765,857.22 = 300,318.68/x
  3. Step 3: Cross multiply
    554,967.56x = 765,857.22 × 300,318.68
  4. Step 4: Simplify right side
    554,967.56x = 230,001,229,378.87
  5. Step 5: Solve for x
    x = 230,001,229,378.87/554,967.56
  6. Step 6: Final answer
    x = 414,440.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.