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Finding the Fourth Proportional to 245,170.69, 338,344.25 and 137,738.56

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Solution

The fourth proportional to 245,170.69, 338,344.25 and 137,738.56 is: 190,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,170.69 : 338,344.25 = 137,738.56 : x
  2. Step 2: Convert to fraction form
    245,170.69/338,344.25 = 137,738.56/x
  3. Step 3: Cross multiply
    245,170.69x = 338,344.25 × 137,738.56
  4. Step 4: Simplify right side
    245,170.69x = 46,603,049,779.28
  5. Step 5: Solve for x
    x = 46,603,049,779.28/245,170.69
  6. Step 6: Final answer
    x = 190,084.10

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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.