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Finding the Fourth Proportional to 371,616.45, 512,842.86 and 210,467.96

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Solution

The fourth proportional to 371,616.45, 512,842.86 and 210,467.96 is: 290,452.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,616.45 : 512,842.86 = 210,467.96 : x
  2. Step 2: Convert to fraction form
    371,616.45/512,842.86 = 210,467.96/x
  3. Step 3: Cross multiply
    371,616.45x = 512,842.86 × 210,467.96
  4. Step 4: Simplify right side
    371,616.45x = 107,936,990,544.77
  5. Step 5: Solve for x
    x = 107,936,990,544.77/371,616.45
  6. Step 6: Final answer
    x = 290,452.67

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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.