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Finding the Fourth Proportional to 397,611.45, 548,494.74 and 236,351.79

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Solution

The fourth proportional to 397,611.45, 548,494.74 and 236,351.79 is: 326,041.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,611.45 : 548,494.74 = 236,351.79 : x
  2. Step 2: Convert to fraction form
    397,611.45/548,494.74 = 236,351.79/x
  3. Step 3: Cross multiply
    397,611.45x = 548,494.74 × 236,351.79
  4. Step 4: Simplify right side
    397,611.45x = 129,637,713,604.59
  5. Step 5: Solve for x
    x = 129,637,713,604.59/397,611.45
  6. Step 6: Final answer
    x = 326,041.20

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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.