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Finding the Fourth Proportional to 260,797.60, 391,721.52 and 253,447.84

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Solution

The fourth proportional to 260,797.60, 391,721.52 and 253,447.84 is: 380,682.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,797.60 : 391,721.52 = 253,447.84 : x
  2. Step 2: Convert to fraction form
    260,797.60/391,721.52 = 253,447.84/x
  3. Step 3: Cross multiply
    260,797.60x = 391,721.52 × 253,447.84
  4. Step 4: Simplify right side
    260,797.60x = 99,280,973,125.52
  5. Step 5: Solve for x
    x = 99,280,973,125.52/260,797.60
  6. Step 6: Final answer
    x = 380,682.08

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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.