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Finding the Fourth Proportional to 289,258.62, 399,191.67 and 161,926.62

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Solution

The fourth proportional to 289,258.62, 399,191.67 and 161,926.62 is: 223,467.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,258.62 : 399,191.67 = 161,926.62 : x
  2. Step 2: Convert to fraction form
    289,258.62/399,191.67 = 161,926.62/x
  3. Step 3: Cross multiply
    289,258.62x = 399,191.67 × 161,926.62
  4. Step 4: Simplify right side
    289,258.62x = 64,639,757,855.26
  5. Step 5: Solve for x
    x = 64,639,757,855.26/289,258.62
  6. Step 6: Final answer
    x = 223,467.01

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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.