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Finding the Fourth Proportional to 550,992.20, 760,380.52 and 309,292.26

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Solution

The fourth proportional to 550,992.20, 760,380.52 and 309,292.26 is: 426,829.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,992.20 : 760,380.52 = 309,292.26 : x
  2. Step 2: Convert to fraction form
    550,992.20/760,380.52 = 309,292.26/x
  3. Step 3: Cross multiply
    550,992.20x = 760,380.52 × 309,292.26
  4. Step 4: Simplify right side
    550,992.20x = 235,179,809,490.78
  5. Step 5: Solve for x
    x = 235,179,809,490.78/550,992.20
  6. Step 6: Final answer
    x = 426,829.65

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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.