Home / 213,871,709.80-321,492,533.10-198,707,926.60

Finding the Fourth Proportional to 213,871,709.80, 321,492,533.10 and 198,707,926.60

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Solution

The fourth proportional to 213,871,709.80, 321,492,533.10 and 198,707,926.60 is: 298,698,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,871,709.80 : 321,492,533.10 = 198,707,926.60 : x
  2. Step 2: Convert to fraction form
    213,871,709.80/321,492,533.10 = 198,707,926.60/x
  3. Step 3: Cross multiply
    213,871,709.80x = 321,492,533.10 × 198,707,926.60
  4. Step 4: Simplify right side
    213,871,709.80x = 63,883,114,669,682,872
  5. Step 5: Solve for x
    x = 63,883,114,669,682,872/213,871,709.80
  6. Step 6: Final answer
    x = 298,698,293.15

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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.