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Finding the Fourth Proportional to 245,847.60, 368,512.20 and 140,439.60

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Solution

The fourth proportional to 245,847.60, 368,512.20 and 140,439.60 is: 210,511.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,847.60 : 368,512.20 = 140,439.60 : x
  2. Step 2: Convert to fraction form
    245,847.60/368,512.20 = 140,439.60/x
  3. Step 3: Cross multiply
    245,847.60x = 368,512.20 × 140,439.60
  4. Step 4: Simplify right side
    245,847.60x = 51,753,705,963.12
  5. Step 5: Solve for x
    x = 51,753,705,963.12/245,847.60
  6. Step 6: Final answer
    x = 210,511.33

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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.