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Finding the Fourth Proportional to 554,970.09, 765,858.72 and 300,321.28

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Solution

The fourth proportional to 554,970.09, 765,858.72 and 300,321.28 is: 414,443.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,970.09 : 765,858.72 = 300,321.28 : x
  2. Step 2: Convert to fraction form
    554,970.09/765,858.72 = 300,321.28/x
  3. Step 3: Cross multiply
    554,970.09x = 765,858.72 × 300,321.28
  4. Step 4: Simplify right side
    554,970.09x = 230,003,667,260.27
  5. Step 5: Solve for x
    x = 230,003,667,260.27/554,970.09
  6. Step 6: Final answer
    x = 414,443.36

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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.