Home / 291,255,778.90-436,883,668.35-266,313,481.30

Finding the Fourth Proportional to 291,255,778.90, 436,883,668.35 and 266,313,481.30

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Solution

The fourth proportional to 291,255,778.90, 436,883,668.35 and 266,313,481.30 is: 399,470,221.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,255,778.90 : 436,883,668.35 = 266,313,481.30 : x
  2. Step 2: Convert to fraction form
    291,255,778.90/436,883,668.35 = 266,313,481.30/x
  3. Step 3: Cross multiply
    291,255,778.90x = 436,883,668.35 × 266,313,481.30
  4. Step 4: Simplify right side
    291,255,778.90x = 116,348,010,641,403,136
  5. Step 5: Solve for x
    x = 116,348,010,641,403,136/291,255,778.90
  6. Step 6: Final answer
    x = 399,470,221.95

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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.