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Finding the Fourth Proportional to 203,543.80, 305,607.30 and 144,640.60

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Solution

The fourth proportional to 203,543.80, 305,607.30 and 144,640.60 is: 217,168.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,543.80 : 305,607.30 = 144,640.60 : x
  2. Step 2: Convert to fraction form
    203,543.80/305,607.30 = 144,640.60/x
  3. Step 3: Cross multiply
    203,543.80x = 305,607.30 × 144,640.60
  4. Step 4: Simplify right side
    203,543.80x = 44,203,223,236.38
  5. Step 5: Solve for x
    x = 44,203,223,236.38/203,543.80
  6. Step 6: Final answer
    x = 217,168.11

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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.