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Finding the Fourth Proportional to 207,077.40, 310,616.10 and 198,912.60

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Solution

The fourth proportional to 207,077.40, 310,616.10 and 198,912.60 is: 298,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,077.40 : 310,616.10 = 198,912.60 : x
  2. Step 2: Convert to fraction form
    207,077.40/310,616.10 = 198,912.60/x
  3. Step 3: Cross multiply
    207,077.40x = 310,616.10 × 198,912.60
  4. Step 4: Simplify right side
    207,077.40x = 61,785,456,052.86
  5. Step 5: Solve for x
    x = 61,785,456,052.86/207,077.40
  6. Step 6: Final answer
    x = 298,368.90

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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.