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Finding the Fourth Proportional to 421,195.19, 631,149.89 and 250,079.94

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Solution

The fourth proportional to 421,195.19, 631,149.89 and 250,079.94 is: 374,738.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,195.19 : 631,149.89 = 250,079.94 : x
  2. Step 2: Convert to fraction form
    421,195.19/631,149.89 = 250,079.94/x
  3. Step 3: Cross multiply
    421,195.19x = 631,149.89 × 250,079.94
  4. Step 4: Simplify right side
    421,195.19x = 157,837,926,622.21
  5. Step 5: Solve for x
    x = 157,837,926,622.21/421,195.19
  6. Step 6: Final answer
    x = 374,738.20

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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.