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Finding the Fourth Proportional to 505,087.22, 697,002.08 and 278,727.86

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Solution

The fourth proportional to 505,087.22, 697,002.08 and 278,727.86 is: 384,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,087.22 : 697,002.08 = 278,727.86 : x
  2. Step 2: Convert to fraction form
    505,087.22/697,002.08 = 278,727.86/x
  3. Step 3: Cross multiply
    505,087.22x = 697,002.08 × 278,727.86
  4. Step 4: Simplify right side
    505,087.22x = 194,273,898,173.95
  5. Step 5: Solve for x
    x = 194,273,898,173.95/505,087.22
  6. Step 6: Final answer
    x = 384,634.36

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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.