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Finding the Fourth Proportional to 351,691.09, 485,065.89 and 302,716.06

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Solution

The fourth proportional to 351,691.09, 485,065.89 and 302,716.06 is: 417,517.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,691.09 : 485,065.89 = 302,716.06 : x
  2. Step 2: Convert to fraction form
    351,691.09/485,065.89 = 302,716.06/x
  3. Step 3: Cross multiply
    351,691.09x = 485,065.89 × 302,716.06
  4. Step 4: Simplify right side
    351,691.09x = 146,837,233,848.53
  5. Step 5: Solve for x
    x = 146,837,233,848.53/351,691.09
  6. Step 6: Final answer
    x = 417,517.64

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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.