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Finding the Fourth Proportional to 297,745.40, 446,367.01 and 129,138.74

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Solution

The fourth proportional to 297,745.40, 446,367.01 and 129,138.74 is: 193,599.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,745.40 : 446,367.01 = 129,138.74 : x
  2. Step 2: Convert to fraction form
    297,745.40/446,367.01 = 129,138.74/x
  3. Step 3: Cross multiply
    297,745.40x = 446,367.01 × 129,138.74
  4. Step 4: Simplify right side
    297,745.40x = 57,643,270,694.29
  5. Step 5: Solve for x
    x = 57,643,270,694.29/297,745.40
  6. Step 6: Final answer
    x = 193,599.20

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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.