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Finding the Fourth Proportional to 209,771.74, 314,665.41 and 67,619.07

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Solution

The fourth proportional to 209,771.74, 314,665.41 and 67,619.07 is: 101,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,771.74 : 314,665.41 = 67,619.07 : x
  2. Step 2: Convert to fraction form
    209,771.74/314,665.41 = 67,619.07/x
  3. Step 3: Cross multiply
    209,771.74x = 314,665.41 × 67,619.07
  4. Step 4: Simplify right side
    209,771.74x = 21,277,381,452.20
  5. Step 5: Solve for x
    x = 21,277,381,452.20/209,771.74
  6. Step 6: Final answer
    x = 101,431.11

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1.5x scale

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.