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Finding the Fourth Proportional to 555,238.08, 766,230.30 and 300,590.28

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Solution

The fourth proportional to 555,238.08, 766,230.30 and 300,590.28 is: 414,815.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,238.08 : 766,230.30 = 300,590.28 : x
  2. Step 2: Convert to fraction form
    555,238.08/766,230.30 = 300,590.28/x
  3. Step 3: Cross multiply
    555,238.08x = 766,230.30 × 300,590.28
  4. Step 4: Simplify right side
    555,238.08x = 230,321,380,421.48
  5. Step 5: Solve for x
    x = 230,321,380,421.48/555,238.08
  6. Step 6: Final answer
    x = 414,815.53

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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.