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Finding the Fourth Proportional to 554,758.90, 765,564.69 and 300,107.86

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Solution

The fourth proportional to 554,758.90, 765,564.69 and 300,107.86 is: 414,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,758.90 : 765,564.69 = 300,107.86 : x
  2. Step 2: Convert to fraction form
    554,758.90/765,564.69 = 300,107.86/x
  3. Step 3: Cross multiply
    554,758.90x = 765,564.69 × 300,107.86
  4. Step 4: Simplify right side
    554,758.90x = 229,751,980,807.46
  5. Step 5: Solve for x
    x = 229,751,980,807.46/554,758.90
  6. Step 6: Final answer
    x = 414,147.44

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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.