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Finding the Fourth Proportional to 260,169.60, 389,962.80 and 110,384.40

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Solution

The fourth proportional to 260,169.60, 389,962.80 and 110,384.40 is: 165,452.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,169.60 : 389,962.80 = 110,384.40 : x
  2. Step 2: Convert to fraction form
    260,169.60/389,962.80 = 110,384.40/x
  3. Step 3: Cross multiply
    260,169.60x = 389,962.80 × 110,384.40
  4. Step 4: Simplify right side
    260,169.60x = 43,045,809,700.32
  5. Step 5: Solve for x
    x = 43,045,809,700.32/260,169.60
  6. Step 6: Final answer
    x = 165,452.88

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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.