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Finding the Fourth Proportional to 260,930.89, 391,420.77 and 83,395.63

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Solution

The fourth proportional to 260,930.89, 391,420.77 and 83,395.63 is: 125,101.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,930.89 : 391,420.77 = 83,395.63 : x
  2. Step 2: Convert to fraction form
    260,930.89/391,420.77 = 83,395.63/x
  3. Step 3: Cross multiply
    260,930.89x = 391,420.77 × 83,395.63
  4. Step 4: Simplify right side
    260,930.89x = 32,642,781,709.24
  5. Step 5: Solve for x
    x = 32,642,781,709.24/260,930.89
  6. Step 6: Final answer
    x = 125,101.25

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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.