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Finding the Fourth Proportional to 315,699.54, 435,769.19 and 251,286.93

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Solution

The fourth proportional to 315,699.54, 435,769.19 and 251,286.93 is: 346,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,699.54 : 435,769.19 = 251,286.93 : x
  2. Step 2: Convert to fraction form
    315,699.54/435,769.19 = 251,286.93/x
  3. Step 3: Cross multiply
    315,699.54x = 435,769.19 × 251,286.93
  4. Step 4: Simplify right side
    315,699.54x = 109,503,100,687.25
  5. Step 5: Solve for x
    x = 109,503,100,687.25/315,699.54
  6. Step 6: Final answer
    x = 346,858.60

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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.