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Finding the Fourth Proportional to 378,768.15, 568,808.33 and 201,621.15

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Solution

The fourth proportional to 378,768.15, 568,808.33 and 201,621.15 is: 302,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,768.15 : 568,808.33 = 201,621.15 : x
  2. Step 2: Convert to fraction form
    378,768.15/568,808.33 = 201,621.15/x
  3. Step 3: Cross multiply
    378,768.15x = 568,808.33 × 201,621.15
  4. Step 4: Simplify right side
    378,768.15x = 114,683,788,616.07
  5. Step 5: Solve for x
    x = 114,683,788,616.07/378,768.15
  6. Step 6: Final answer
    x = 302,780.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.