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Finding the Fourth Proportional to 228,847.20, 343,270.80 and 135,458.40

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Solution

The fourth proportional to 228,847.20, 343,270.80 and 135,458.40 is: 203,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,847.20 : 343,270.80 = 135,458.40 : x
  2. Step 2: Convert to fraction form
    228,847.20/343,270.80 = 135,458.40/x
  3. Step 3: Cross multiply
    228,847.20x = 343,270.80 × 135,458.40
  4. Step 4: Simplify right side
    228,847.20x = 46,498,913,334.72
  5. Step 5: Solve for x
    x = 46,498,913,334.72/228,847.20
  6. Step 6: Final answer
    x = 203,187.60

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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.