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Finding the Fourth Proportional to 325,243.85, 487,912.23 and 100,623.45

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Solution

The fourth proportional to 325,243.85, 487,912.23 and 100,623.45 is: 150,949.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,243.85 : 487,912.23 = 100,623.45 : x
  2. Step 2: Convert to fraction form
    325,243.85/487,912.23 = 100,623.45/x
  3. Step 3: Cross multiply
    325,243.85x = 487,912.23 × 100,623.45
  4. Step 4: Simplify right side
    325,243.85x = 49,095,411,879.79
  5. Step 5: Solve for x
    x = 49,095,411,879.79/325,243.85
  6. Step 6: Final answer
    x = 150,949.55

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1.5x scale

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.