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Finding the Fourth Proportional to 505,309.04, 697,315.18 and 275,857.42

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Solution

The fourth proportional to 505,309.04, 697,315.18 and 275,857.42 is: 380,677.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,309.04 : 697,315.18 = 275,857.42 : x
  2. Step 2: Convert to fraction form
    505,309.04/697,315.18 = 275,857.42/x
  3. Step 3: Cross multiply
    505,309.04x = 697,315.18 × 275,857.42
  4. Step 4: Simplify right side
    505,309.04x = 192,359,566,481.64
  5. Step 5: Solve for x
    x = 192,359,566,481.64/505,309.04
  6. Step 6: Final answer
    x = 380,677.07

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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.