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Finding the Fourth Proportional to 303,421.48, 418,621.74 and 196,054.72

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Solution

The fourth proportional to 303,421.48, 418,621.74 and 196,054.72 is: 270,490.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,421.48 : 418,621.74 = 196,054.72 : x
  2. Step 2: Convert to fraction form
    303,421.48/418,621.74 = 196,054.72/x
  3. Step 3: Cross multiply
    303,421.48x = 418,621.74 × 196,054.72
  4. Step 4: Simplify right side
    303,421.48x = 82,072,768,021.61
  5. Step 5: Solve for x
    x = 82,072,768,021.61/303,421.48
  6. Step 6: Final answer
    x = 270,490.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.