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Finding the Fourth Proportional to 248,890,147.20, 347,639,990.40 and 248,890,147.20

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Solution

The fourth proportional to 248,890,147.20, 347,639,990.40 and 248,890,147.20 is: 347,639,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,890,147.20 : 347,639,990.40 = 248,890,147.20 : x
  2. Step 2: Convert to fraction form
    248,890,147.20/347,639,990.40 = 248,890,147.20/x
  3. Step 3: Cross multiply
    248,890,147.20x = 347,639,990.40 × 248,890,147.20
  4. Step 4: Simplify right side
    248,890,147.20x = 86,524,168,383,262,576
  5. Step 5: Solve for x
    x = 86,524,168,383,262,576/248,890,147.20
  6. Step 6: Final answer
    x = 347,639,990.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.