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Finding the Fourth Proportional to 505,072.98, 697,015.41 and 275,645.03

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Solution

The fourth proportional to 505,072.98, 697,015.41 and 275,645.03 is: 380,398.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,072.98 : 697,015.41 = 275,645.03 : x
  2. Step 2: Convert to fraction form
    505,072.98/697,015.41 = 275,645.03/x
  3. Step 3: Cross multiply
    505,072.98x = 697,015.41 × 275,645.03
  4. Step 4: Simplify right side
    505,072.98x = 192,128,830,114.84
  5. Step 5: Solve for x
    x = 192,128,830,114.84/505,072.98
  6. Step 6: Final answer
    x = 380,398.16

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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.