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Finding the Fourth Proportional to 207,455.40, 310,993.02 and 67,141.80

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Solution

The fourth proportional to 207,455.40, 310,993.02 and 67,141.80 is: 100,651.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,455.40 : 310,993.02 = 67,141.80 : x
  2. Step 2: Convert to fraction form
    207,455.40/310,993.02 = 67,141.80/x
  3. Step 3: Cross multiply
    207,455.40x = 310,993.02 × 67,141.80
  4. Step 4: Simplify right side
    207,455.40x = 20,880,631,150.24
  5. Step 5: Solve for x
    x = 20,880,631,150.24/207,455.40
  6. Step 6: Final answer
    x = 100,651.18

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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.