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Finding the Fourth Proportional to 554,958.80, 765,845.16 and 300,309.96

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Solution

The fourth proportional to 554,958.80, 765,845.16 and 300,309.96 is: 414,428.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,958.80 : 765,845.16 = 300,309.96 : x
  2. Step 2: Convert to fraction form
    554,958.80/765,845.16 = 300,309.96/x
  3. Step 3: Cross multiply
    554,958.80x = 765,845.16 × 300,309.96
  4. Step 4: Simplify right side
    554,958.80x = 229,990,929,365.79
  5. Step 5: Solve for x
    x = 229,990,929,365.79/554,958.80
  6. Step 6: Final answer
    x = 414,428.84

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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.