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Finding the Fourth Proportional to 505,166.37, 697,079.97 and 278,797.29

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Solution

The fourth proportional to 505,166.37, 697,079.97 and 278,797.29 is: 384,712.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,166.37 : 697,079.97 = 278,797.29 : x
  2. Step 2: Convert to fraction form
    505,166.37/697,079.97 = 278,797.29/x
  3. Step 3: Cross multiply
    505,166.37x = 697,079.97 × 278,797.29
  4. Step 4: Simplify right side
    505,166.37x = 194,344,006,549.28
  5. Step 5: Solve for x
    x = 194,344,006,549.28/505,166.37
  6. Step 6: Final answer
    x = 384,712.87

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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.