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Finding the Fourth Proportional to 306,670.86, 423,199.49 and 192,012.73

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Solution

The fourth proportional to 306,670.86, 423,199.49 and 192,012.73 is: 264,973.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,670.86 : 423,199.49 = 192,012.73 : x
  2. Step 2: Convert to fraction form
    306,670.86/423,199.49 = 192,012.73/x
  3. Step 3: Cross multiply
    306,670.86x = 423,199.49 × 192,012.73
  4. Step 4: Simplify right side
    306,670.86x = 81,259,687,391.45
  5. Step 5: Solve for x
    x = 81,259,687,391.45/306,670.86
  6. Step 6: Final answer
    x = 264,973.62

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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.