Home / 228,109.35-314,780.54-131,309.09

Finding the Fourth Proportional to 228,109.35, 314,780.54 and 131,309.09

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Solution

The fourth proportional to 228,109.35, 314,780.54 and 131,309.09 is: 181,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,109.35 : 314,780.54 = 131,309.09 : x
  2. Step 2: Convert to fraction form
    228,109.35/314,780.54 = 131,309.09/x
  3. Step 3: Cross multiply
    228,109.35x = 314,780.54 × 131,309.09
  4. Step 4: Simplify right side
    228,109.35x = 41,333,546,257.11
  5. Step 5: Solve for x
    x = 41,333,546,257.11/228,109.35
  6. Step 6: Final answer
    x = 181,200.58

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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.