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Finding the Fourth Proportional to 306,993.81, 423,682.47 and 171,049.89

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Solution

The fourth proportional to 306,993.81, 423,682.47 and 171,049.89 is: 236,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,993.81 : 423,682.47 = 171,049.89 : x
  2. Step 2: Convert to fraction form
    306,993.81/423,682.47 = 171,049.89/x
  3. Step 3: Cross multiply
    306,993.81x = 423,682.47 × 171,049.89
  4. Step 4: Simplify right side
    306,993.81x = 72,470,839,888.43
  5. Step 5: Solve for x
    x = 72,470,839,888.43/306,993.81
  6. Step 6: Final answer
    x = 236,066.13

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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.