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Finding the Fourth Proportional to 260,914.94, 391,339.74 and 83,407.22

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Solution

The fourth proportional to 260,914.94, 391,339.74 and 83,407.22 is: 125,100.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,914.94 : 391,339.74 = 83,407.22 : x
  2. Step 2: Convert to fraction form
    260,914.94/391,339.74 = 83,407.22/x
  3. Step 3: Cross multiply
    260,914.94x = 391,339.74 × 83,407.22
  4. Step 4: Simplify right side
    260,914.94x = 32,640,559,788.92
  5. Step 5: Solve for x
    x = 32,640,559,788.92/260,914.94
  6. Step 6: Final answer
    x = 125,100.39

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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.