Home / 245,755.40-339,143.04-138,326.96

Finding the Fourth Proportional to 245,755.40, 339,143.04 and 138,326.96

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Solution

The fourth proportional to 245,755.40, 339,143.04 and 138,326.96 is: 190,891.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,755.40 : 339,143.04 = 138,326.96 : x
  2. Step 2: Convert to fraction form
    245,755.40/339,143.04 = 138,326.96/x
  3. Step 3: Cross multiply
    245,755.40x = 339,143.04 × 138,326.96
  4. Step 4: Simplify right side
    245,755.40x = 46,912,625,728.36
  5. Step 5: Solve for x
    x = 46,912,625,728.36/245,755.40
  6. Step 6: Final answer
    x = 190,891.54

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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.