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Finding the Fourth Proportional to 343,745.40, 515,618.10 and 324,062.40

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Solution

The fourth proportional to 343,745.40, 515,618.10 and 324,062.40 is: 486,093.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,745.40 : 515,618.10 = 324,062.40 : x
  2. Step 2: Convert to fraction form
    343,745.40/515,618.10 = 324,062.40/x
  3. Step 3: Cross multiply
    343,745.40x = 515,618.10 × 324,062.40
  4. Step 4: Simplify right side
    343,745.40x = 167,092,438,969.44
  5. Step 5: Solve for x
    x = 167,092,438,969.44/343,745.40
  6. Step 6: Final answer
    x = 486,093.60

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1.5x scale

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.