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Finding the Fourth Proportional to 235,391.72, 352,976.56 and 85,526.32

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Solution

The fourth proportional to 235,391.72, 352,976.56 and 85,526.32 is: 128,249.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,391.72 : 352,976.56 = 85,526.32 : x
  2. Step 2: Convert to fraction form
    235,391.72/352,976.56 = 85,526.32/x
  3. Step 3: Cross multiply
    235,391.72x = 352,976.56 × 85,526.32
  4. Step 4: Simplify right side
    235,391.72x = 30,188,786,223.06
  5. Step 5: Solve for x
    x = 30,188,786,223.06/235,391.72
  6. Step 6: Final answer
    x = 128,249.14

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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.