Home / 258,866,807.40-388,300,211.10-218,052,138.60

Finding the Fourth Proportional to 258,866,807.40, 388,300,211.10 and 218,052,138.60

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Solution

The fourth proportional to 258,866,807.40, 388,300,211.10 and 218,052,138.60 is: 327,078,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,866,807.40 : 388,300,211.10 = 218,052,138.60 : x
  2. Step 2: Convert to fraction form
    258,866,807.40/388,300,211.10 = 218,052,138.60/x
  3. Step 3: Cross multiply
    258,866,807.40x = 388,300,211.10 × 218,052,138.60
  4. Step 4: Simplify right side
    258,866,807.40x = 84,669,691,449,186,464
  5. Step 5: Solve for x
    x = 84,669,691,449,186,464/258,866,807.40
  6. Step 6: Final answer
    x = 327,078,207.90

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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.