Home / 245,755.28-339,142.21-138,325.88

Finding the Fourth Proportional to 245,755.28, 339,142.21 and 138,325.88

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Solution

The fourth proportional to 245,755.28, 339,142.21 and 138,325.88 is: 190,889.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,755.28 : 339,142.21 = 138,325.88 : x
  2. Step 2: Convert to fraction form
    245,755.28/339,142.21 = 138,325.88/x
  3. Step 3: Cross multiply
    245,755.28x = 339,142.21 × 138,325.88
  4. Step 4: Simplify right side
    245,755.28x = 46,912,145,145.44
  5. Step 5: Solve for x
    x = 46,912,145,145.44/245,755.28
  6. Step 6: Final answer
    x = 190,889.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.