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Finding the Fourth Proportional to 245,212.32, 338,391.90 and 136,315.92

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Solution

The fourth proportional to 245,212.32, 338,391.90 and 136,315.92 is: 188,115.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,212.32 : 338,391.90 = 136,315.92 : x
  2. Step 2: Convert to fraction form
    245,212.32/338,391.90 = 136,315.92/x
  3. Step 3: Cross multiply
    245,212.32x = 338,391.90 × 136,315.92
  4. Step 4: Simplify right side
    245,212.32x = 46,128,203,169.05
  5. Step 5: Solve for x
    x = 46,128,203,169.05/245,212.32
  6. Step 6: Final answer
    x = 188,115.36

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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.