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Finding the Fourth Proportional to 245,161.72, 338,315.32 and 136,265.52

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Solution

The fourth proportional to 245,161.72, 338,315.32 and 136,265.52 is: 188,042.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,161.72 : 338,315.32 = 136,265.52 : x
  2. Step 2: Convert to fraction form
    245,161.72/338,315.32 = 136,265.52/x
  3. Step 3: Cross multiply
    245,161.72x = 338,315.32 × 136,265.52
  4. Step 4: Simplify right side
    245,161.72x = 46,100,713,003.77
  5. Step 5: Solve for x
    x = 46,100,713,003.77/245,161.72
  6. Step 6: Final answer
    x = 188,042.05

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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.