Home / 312,705.18-431,554.74-190,245.33

Finding the Fourth Proportional to 312,705.18, 431,554.74 and 190,245.33

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Solution

The fourth proportional to 312,705.18, 431,554.74 and 190,245.33 is: 262,551.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,705.18 : 431,554.74 = 190,245.33 : x
  2. Step 2: Convert to fraction form
    312,705.18/431,554.74 = 190,245.33/x
  3. Step 3: Cross multiply
    312,705.18x = 431,554.74 × 190,245.33
  4. Step 4: Simplify right side
    312,705.18x = 82,101,273,924.36
  5. Step 5: Solve for x
    x = 82,101,273,924.36/312,705.18
  6. Step 6: Final answer
    x = 262,551.69

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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.