Home / 214,597,740.80-321,896,611.20-78,287,571.20

Finding the Fourth Proportional to 214,597,740.80, 321,896,611.20 and 78,287,571.20

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Solution

The fourth proportional to 214,597,740.80, 321,896,611.20 and 78,287,571.20 is: 117,431,356.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,597,740.80 : 321,896,611.20 = 78,287,571.20 : x
  2. Step 2: Convert to fraction form
    214,597,740.80/321,896,611.20 = 78,287,571.20/x
  3. Step 3: Cross multiply
    214,597,740.80x = 321,896,611.20 × 78,287,571.20
  4. Step 4: Simplify right side
    214,597,740.80x = 25,200,503,868,358,716
  5. Step 5: Solve for x
    x = 25,200,503,868,358,716/214,597,740.80
  6. Step 6: Final answer
    x = 117,431,356.80

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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.