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Finding the Fourth Proportional to 388,030,880.40, 582,471,473.40 and 242,628,622.80

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Solution

The fourth proportional to 388,030,880.40, 582,471,473.40 and 242,628,622.80 is: 364,208,774.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,030,880.40 : 582,471,473.40 = 242,628,622.80 : x
  2. Step 2: Convert to fraction form
    388,030,880.40/582,471,473.40 = 242,628,622.80/x
  3. Step 3: Cross multiply
    388,030,880.40x = 582,471,473.40 × 242,628,622.80
  4. Step 4: Simplify right side
    388,030,880.40x = 141,324,251,411,328,832
  5. Step 5: Solve for x
    x = 141,324,251,411,328,832/388,030,880.40
  6. Step 6: Final answer
    x = 364,208,774.48

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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.