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Finding the Fourth Proportional to 235,287, 324,739.80 and 134,685

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Solution

The fourth proportional to 235,287, 324,739.80 and 134,685 is: 185,890.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,287 : 324,739.80 = 134,685 : x
  2. Step 2: Convert to fraction form
    235,287/324,739.80 = 134,685/x
  3. Step 3: Cross multiply
    235,287x = 324,739.80 × 134,685
  4. Step 4: Simplify right side
    235,287x = 43,737,579,963
  5. Step 5: Solve for x
    x = 43,737,579,963/235,287
  6. Step 6: Final answer
    x = 185,890.34

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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.