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Finding the Fourth Proportional to 208,175.16, 312,305.94 and 83,525.88

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Solution

The fourth proportional to 208,175.16, 312,305.94 and 83,525.88 is: 125,306.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,175.16 : 312,305.94 = 83,525.88 : x
  2. Step 2: Convert to fraction form
    208,175.16/312,305.94 = 83,525.88/x
  3. Step 3: Cross multiply
    208,175.16x = 312,305.94 × 83,525.88
  4. Step 4: Simplify right side
    208,175.16x = 26,085,628,467.73
  5. Step 5: Solve for x
    x = 26,085,628,467.73/208,175.16
  6. Step 6: Final answer
    x = 125,306.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.