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Finding the Fourth Proportional to 291,054.09, 436,583.12 and 111,090.99

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Solution

The fourth proportional to 291,054.09, 436,583.12 and 111,090.99 is: 166,637.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,054.09 : 436,583.12 = 111,090.99 : x
  2. Step 2: Convert to fraction form
    291,054.09/436,583.12 = 111,090.99/x
  3. Step 3: Cross multiply
    291,054.09x = 436,583.12 × 111,090.99
  4. Step 4: Simplify right side
    291,054.09x = 48,500,452,099.82
  5. Step 5: Solve for x
    x = 48,500,452,099.82/291,054.09
  6. Step 6: Final answer
    x = 166,637.24

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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.