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Finding the Fourth Proportional to 245,626.51, 338,962.18 and 136,729.12

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Solution

The fourth proportional to 245,626.51, 338,962.18 and 136,729.12 is: 188,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,626.51 : 338,962.18 = 136,729.12 : x
  2. Step 2: Convert to fraction form
    245,626.51/338,962.18 = 136,729.12/x
  3. Step 3: Cross multiply
    245,626.51x = 338,962.18 × 136,729.12
  4. Step 4: Simplify right side
    245,626.51x = 46,346,000,584.68
  5. Step 5: Solve for x
    x = 46,346,000,584.68/245,626.51
  6. Step 6: Final answer
    x = 188,684.85

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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.