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Finding the Fourth Proportional to 291,270.66, 436,905.27 and 91,608.54

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Solution

The fourth proportional to 291,270.66, 436,905.27 and 91,608.54 is: 137,412.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,270.66 : 436,905.27 = 91,608.54 : x
  2. Step 2: Convert to fraction form
    291,270.66/436,905.27 = 91,608.54/x
  3. Step 3: Cross multiply
    291,270.66x = 436,905.27 × 91,608.54
  4. Step 4: Simplify right side
    291,270.66x = 40,024,253,903.01
  5. Step 5: Solve for x
    x = 40,024,253,903.01/291,270.66
  6. Step 6: Final answer
    x = 137,412.58

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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.