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Finding the Fourth Proportional to 545,431.02, 818,183.81 and 185,455.32

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Solution

The fourth proportional to 545,431.02, 818,183.81 and 185,455.32 is: 278,195.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,431.02 : 818,183.81 = 185,455.32 : x
  2. Step 2: Convert to fraction form
    545,431.02/818,183.81 = 185,455.32/x
  3. Step 3: Cross multiply
    545,431.02x = 818,183.81 × 185,455.32
  4. Step 4: Simplify right side
    545,431.02x = 151,736,539,375.09
  5. Step 5: Solve for x
    x = 151,736,539,375.09/545,431.02
  6. Step 6: Final answer
    x = 278,195.65

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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.