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Finding the Fourth Proportional to 263,502.45, 395,308.35 and 105,743.34

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Solution

The fourth proportional to 263,502.45, 395,308.35 and 105,743.34 is: 158,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,502.45 : 395,308.35 = 105,743.34 : x
  2. Step 2: Convert to fraction form
    263,502.45/395,308.35 = 105,743.34/x
  3. Step 3: Cross multiply
    263,502.45x = 395,308.35 × 105,743.34
  4. Step 4: Simplify right side
    263,502.45x = 41,801,225,258.89
  5. Step 5: Solve for x
    x = 41,801,225,258.89/263,502.45
  6. Step 6: Final answer
    x = 158,636.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.