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Finding the Fourth Proportional to 260,931.89, 391,422.27 and 83,396.63

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Solution

The fourth proportional to 260,931.89, 391,422.27 and 83,396.63 is: 125,102.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,931.89 : 391,422.27 = 83,396.63 : x
  2. Step 2: Convert to fraction form
    260,931.89/391,422.27 = 83,396.63/x
  3. Step 3: Cross multiply
    260,931.89x = 391,422.27 × 83,396.63
  4. Step 4: Simplify right side
    260,931.89x = 32,643,298,224.95
  5. Step 5: Solve for x
    x = 32,643,298,224.95/260,931.89
  6. Step 6: Final answer
    x = 125,102.75

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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.