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Finding the Fourth Proportional to 505,249.62, 697,243.05 and 278,893.50

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Solution

The fourth proportional to 505,249.62, 697,243.05 and 278,893.50 is: 384,872.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,249.62 : 697,243.05 = 278,893.50 : x
  2. Step 2: Convert to fraction form
    505,249.62/697,243.05 = 278,893.50/x
  3. Step 3: Cross multiply
    505,249.62x = 697,243.05 × 278,893.50
  4. Step 4: Simplify right side
    505,249.62x = 194,456,554,565.18
  5. Step 5: Solve for x
    x = 194,456,554,565.18/505,249.62
  6. Step 6: Final answer
    x = 384,872.24

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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.