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Finding the Fourth Proportional to 368,802,469.80, 553,203,704.70 and 347,639,308.20

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Solution

The fourth proportional to 368,802,469.80, 553,203,704.70 and 347,639,308.20 is: 521,458,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,802,469.80 : 553,203,704.70 = 347,639,308.20 : x
  2. Step 2: Convert to fraction form
    368,802,469.80/553,203,704.70 = 347,639,308.20/x
  3. Step 3: Cross multiply
    368,802,469.80x = 553,203,704.70 × 347,639,308.20
  4. Step 4: Simplify right side
    368,802,469.80x = 192,315,353,195,585,088
  5. Step 5: Solve for x
    x = 192,315,353,195,585,088/368,802,469.80
  6. Step 6: Final answer
    x = 521,458,962.30

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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.