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Finding the Fourth Proportional to 298,995,139.80, 448,492,709.70 and 218,373,571.80

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Solution

The fourth proportional to 298,995,139.80, 448,492,709.70 and 218,373,571.80 is: 327,560,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,995,139.80 : 448,492,709.70 = 218,373,571.80 : x
  2. Step 2: Convert to fraction form
    298,995,139.80/448,492,709.70 = 218,373,571.80/x
  3. Step 3: Cross multiply
    298,995,139.80x = 448,492,709.70 × 218,373,571.80
  4. Step 4: Simplify right side
    298,995,139.80x = 97,938,954,943,449,504
  5. Step 5: Solve for x
    x = 97,938,954,943,449,504/298,995,139.80
  6. Step 6: Final answer
    x = 327,560,357.70

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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.