Home / 260,808,213.20-391,212,319.80-79,031,771.60

Finding the Fourth Proportional to 260,808,213.20, 391,212,319.80 and 79,031,771.60

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Solution

The fourth proportional to 260,808,213.20, 391,212,319.80 and 79,031,771.60 is: 118,547,657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,808,213.20 : 391,212,319.80 = 79,031,771.60 : x
  2. Step 2: Convert to fraction form
    260,808,213.20/391,212,319.80 = 79,031,771.60/x
  3. Step 3: Cross multiply
    260,808,213.20x = 391,212,319.80 × 79,031,771.60
  4. Step 4: Simplify right side
    260,808,213.20x = 30,918,202,705,539,756
  5. Step 5: Solve for x
    x = 30,918,202,705,539,756/260,808,213.20
  6. Step 6: Final answer
    x = 118,547,657.40

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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.