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Finding the Fourth Proportional to 260,683.95, 391,032.72 and 83,190.72

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Solution

The fourth proportional to 260,683.95, 391,032.72 and 83,190.72 is: 124,788.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,683.95 : 391,032.72 = 83,190.72 : x
  2. Step 2: Convert to fraction form
    260,683.95/391,032.72 = 83,190.72/x
  3. Step 3: Cross multiply
    260,683.95x = 391,032.72 × 83,190.72
  4. Step 4: Simplify right side
    260,683.95x = 32,530,293,520.36
  5. Step 5: Solve for x
    x = 32,530,293,520.36/260,683.95
  6. Step 6: Final answer
    x = 124,788.25

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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.