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Finding the Fourth Proportional to 505,182.78, 697,146.75 and 275,738.22

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Solution

The fourth proportional to 505,182.78, 697,146.75 and 275,738.22 is: 380,515.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,182.78 : 697,146.75 = 275,738.22 : x
  2. Step 2: Convert to fraction form
    505,182.78/697,146.75 = 275,738.22/x
  3. Step 3: Cross multiply
    505,182.78x = 697,146.75 × 275,738.22
  4. Step 4: Simplify right side
    505,182.78x = 192,230,003,923.79
  5. Step 5: Solve for x
    x = 192,230,003,923.79/505,182.78
  6. Step 6: Final answer
    x = 380,515.75

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1.5x scale

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.