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Finding the Fourth Proportional to 551,043.20, 760,381.22 and 309,352.37

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Solution

The fourth proportional to 551,043.20, 760,381.22 and 309,352.37 is: 426,873.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,043.20 : 760,381.22 = 309,352.37 : x
  2. Step 2: Convert to fraction form
    551,043.20/760,381.22 = 309,352.37/x
  3. Step 3: Cross multiply
    551,043.20x = 760,381.22 × 309,352.37
  4. Step 4: Simplify right side
    551,043.20x = 235,225,729,481.97
  5. Step 5: Solve for x
    x = 235,225,729,481.97/551,043.20
  6. Step 6: Final answer
    x = 426,873.48

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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.