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Finding the Fourth Proportional to 418,021.65, 576,850.57 and 236,734.88

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Solution

The fourth proportional to 418,021.65, 576,850.57 and 236,734.88 is: 326,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,021.65 : 576,850.57 = 236,734.88 : x
  2. Step 2: Convert to fraction form
    418,021.65/576,850.57 = 236,734.88/x
  3. Step 3: Cross multiply
    418,021.65x = 576,850.57 × 236,734.88
  4. Step 4: Simplify right side
    418,021.65x = 136,560,647,492.53
  5. Step 5: Solve for x
    x = 136,560,647,492.53/418,021.65
  6. Step 6: Final answer
    x = 326,683.20

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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.