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Finding the Fourth Proportional to 245,894.12, 339,324.76 and 136,995.90

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Solution

The fourth proportional to 245,894.12, 339,324.76 and 136,995.90 is: 189,049.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,894.12 : 339,324.76 = 136,995.90 : x
  2. Step 2: Convert to fraction form
    245,894.12/339,324.76 = 136,995.90/x
  3. Step 3: Cross multiply
    245,894.12x = 339,324.76 × 136,995.90
  4. Step 4: Simplify right side
    245,894.12x = 46,486,100,888.48
  5. Step 5: Solve for x
    x = 46,486,100,888.48/245,894.12
  6. Step 6: Final answer
    x = 189,049.26

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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.