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Finding the Fourth Proportional to 505,960.16, 698,239.46 and 276,530.20

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Solution

The fourth proportional to 505,960.16, 698,239.46 and 276,530.20 is: 381,619.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,960.16 : 698,239.46 = 276,530.20 : x
  2. Step 2: Convert to fraction form
    505,960.16/698,239.46 = 276,530.20/x
  3. Step 3: Cross multiply
    505,960.16x = 698,239.46 × 276,530.20
  4. Step 4: Simplify right side
    505,960.16x = 193,084,297,521.69
  5. Step 5: Solve for x
    x = 193,084,297,521.69/505,960.16
  6. Step 6: Final answer
    x = 381,619.57

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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.