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Finding the Fourth Proportional to 260,398.83, 389,961.27 and 235,155.39

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Solution

The fourth proportional to 260,398.83, 389,961.27 and 235,155.39 is: 352,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,398.83 : 389,961.27 = 235,155.39 : x
  2. Step 2: Convert to fraction form
    260,398.83/389,961.27 = 235,155.39/x
  3. Step 3: Cross multiply
    260,398.83x = 389,961.27 × 235,155.39
  4. Step 4: Simplify right side
    260,398.83x = 91,701,493,069.39
  5. Step 5: Solve for x
    x = 91,701,493,069.39/260,398.83
  6. Step 6: Final answer
    x = 352,157.85

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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.