Home / 291,155,416.80-436,733,125.20-138,100,408.80

Finding the Fourth Proportional to 291,155,416.80, 436,733,125.20 and 138,100,408.80

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Solution

The fourth proportional to 291,155,416.80, 436,733,125.20 and 138,100,408.80 is: 207,150,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,155,416.80 : 436,733,125.20 = 138,100,408.80 : x
  2. Step 2: Convert to fraction form
    291,155,416.80/436,733,125.20 = 138,100,408.80/x
  3. Step 3: Cross multiply
    291,155,416.80x = 436,733,125.20 × 138,100,408.80
  4. Step 4: Simplify right side
    291,155,416.80x = 60,313,023,126,621,584
  5. Step 5: Solve for x
    x = 60,313,023,126,621,584/291,155,416.80
  6. Step 6: Final answer
    x = 207,150,613.20

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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.