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Finding the Fourth Proportional to 397,799, 548,962.62 and 218,951

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Solution

The fourth proportional to 397,799, 548,962.62 and 218,951 is: 302,152.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,799 : 548,962.62 = 218,951 : x
  2. Step 2: Convert to fraction form
    397,799/548,962.62 = 218,951/x
  3. Step 3: Cross multiply
    397,799x = 548,962.62 × 218,951
  4. Step 4: Simplify right side
    397,799x = 120,195,914,611.62
  5. Step 5: Solve for x
    x = 120,195,914,611.62/397,799
  6. Step 6: Final answer
    x = 302,152.38

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1.5x scale

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.