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Finding the Fourth Proportional to 291,039.60, 436,559.40 and 254,881.20

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Solution

The fourth proportional to 291,039.60, 436,559.40 and 254,881.20 is: 382,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,039.60 : 436,559.40 = 254,881.20 : x
  2. Step 2: Convert to fraction form
    291,039.60/436,559.40 = 254,881.20/x
  3. Step 3: Cross multiply
    291,039.60x = 436,559.40 × 254,881.20
  4. Step 4: Simplify right side
    291,039.60x = 111,270,783,743.28
  5. Step 5: Solve for x
    x = 111,270,783,743.28/291,039.60
  6. Step 6: Final answer
    x = 382,321.80

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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.