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Finding the Fourth Proportional to 250,221, 345,307.41 and 149,619

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Solution

The fourth proportional to 250,221, 345,307.41 and 149,619 is: 206,475.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,221 : 345,307.41 = 149,619 : x
  2. Step 2: Convert to fraction form
    250,221/345,307.41 = 149,619/x
  3. Step 3: Cross multiply
    250,221x = 345,307.41 × 149,619
  4. Step 4: Simplify right side
    250,221x = 51,664,549,376.79
  5. Step 5: Solve for x
    x = 51,664,549,376.79/250,221
  6. Step 6: Final answer
    x = 206,475.67

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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.