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Finding the Fourth Proportional to 260,025.60, 389,779.20 and 119,539.20

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Solution

The fourth proportional to 260,025.60, 389,779.20 and 119,539.20 is: 179,189.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,025.60 : 389,779.20 = 119,539.20 : x
  2. Step 2: Convert to fraction form
    260,025.60/389,779.20 = 119,539.20/x
  3. Step 3: Cross multiply
    260,025.60x = 389,779.20 × 119,539.20
  4. Step 4: Simplify right side
    260,025.60x = 46,593,893,744.64
  5. Step 5: Solve for x
    x = 46,593,893,744.64/260,025.60
  6. Step 6: Final answer
    x = 179,189.64

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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.