Home / 206,280,291.20-309,314,148.60-76,821,263.60

Finding the Fourth Proportional to 206,280,291.20, 309,314,148.60 and 76,821,263.60

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Solution

The fourth proportional to 206,280,291.20, 309,314,148.60 and 76,821,263.60 is: 115,192,312.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,280,291.20 : 309,314,148.60 = 76,821,263.60 : x
  2. Step 2: Convert to fraction form
    206,280,291.20/309,314,148.60 = 76,821,263.60/x
  3. Step 3: Cross multiply
    206,280,291.20x = 309,314,148.60 × 76,821,263.60
  4. Step 4: Simplify right side
    206,280,291.20x = 23,761,903,744,810,172
  5. Step 5: Solve for x
    x = 23,761,903,744,810,172/206,280,291.20
  6. Step 6: Final answer
    x = 115,192,312.39

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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.