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Finding the Fourth Proportional to 621,847.20, 933,231.60 and 248,138.40

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Solution

The fourth proportional to 621,847.20, 933,231.60 and 248,138.40 is: 372,391.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,847.20 : 933,231.60 = 248,138.40 : x
  2. Step 2: Convert to fraction form
    621,847.20/933,231.60 = 248,138.40/x
  3. Step 3: Cross multiply
    621,847.20x = 933,231.60 × 248,138.40
  4. Step 4: Simplify right side
    621,847.20x = 231,570,596,053.44
  5. Step 5: Solve for x
    x = 231,570,596,053.44/621,847.20
  6. Step 6: Final answer
    x = 372,391.48

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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.