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Finding the Fourth Proportional to 403,319.07, 605,352.44 and 203,779.69

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Solution

The fourth proportional to 403,319.07, 605,352.44 and 203,779.69 is: 305,858.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,319.07 : 605,352.44 = 203,779.69 : x
  2. Step 2: Convert to fraction form
    403,319.07/605,352.44 = 203,779.69/x
  3. Step 3: Cross multiply
    403,319.07x = 605,352.44 × 203,779.69
  4. Step 4: Simplify right side
    403,319.07x = 123,358,532,563.94
  5. Step 5: Solve for x
    x = 123,358,532,563.94/403,319.07
  6. Step 6: Final answer
    x = 305,858.42

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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.