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Finding the Fourth Proportional to 342,811.08, 514,413.53 and 267,720.44

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Solution

The fourth proportional to 342,811.08, 514,413.53 and 267,720.44 is: 401,734.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,811.08 : 514,413.53 = 267,720.44 : x
  2. Step 2: Convert to fraction form
    342,811.08/514,413.53 = 267,720.44/x
  3. Step 3: Cross multiply
    342,811.08x = 514,413.53 × 267,720.44
  4. Step 4: Simplify right side
    342,811.08x = 137,719,012,682.88
  5. Step 5: Solve for x
    x = 137,719,012,682.88/342,811.08
  6. Step 6: Final answer
    x = 401,734.43

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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.