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Finding the Fourth Proportional to 505,310.04, 697,316.56 and 275,858.42

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Solution

The fourth proportional to 505,310.04, 697,316.56 and 275,858.42 is: 380,678.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,310.04 : 697,316.56 = 275,858.42 : x
  2. Step 2: Convert to fraction form
    505,310.04/697,316.56 = 275,858.42/x
  3. Step 3: Cross multiply
    505,310.04x = 697,316.56 × 275,858.42
  4. Step 4: Simplify right side
    505,310.04x = 192,360,644,481.44
  5. Step 5: Solve for x
    x = 192,360,644,481.44/505,310.04
  6. Step 6: Final answer
    x = 380,678.45

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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.