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Finding the Fourth Proportional to 207,629.40, 311,006.70 and 168,263.40

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Solution

The fourth proportional to 207,629.40, 311,006.70 and 168,263.40 is: 252,040.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,629.40 : 311,006.70 = 168,263.40 : x
  2. Step 2: Convert to fraction form
    207,629.40/311,006.70 = 168,263.40/x
  3. Step 3: Cross multiply
    207,629.40x = 311,006.70 × 168,263.40
  4. Step 4: Simplify right side
    207,629.40x = 52,331,044,764.78
  5. Step 5: Solve for x
    x = 52,331,044,764.78/207,629.40
  6. Step 6: Final answer
    x = 252,040.63

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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.