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Finding the Fourth Proportional to 260,100.40, 389,713.20 and 171,308.20

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Solution

The fourth proportional to 260,100.40, 389,713.20 and 171,308.20 is: 256,674.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,100.40 : 389,713.20 = 171,308.20 : x
  2. Step 2: Convert to fraction form
    260,100.40/389,713.20 = 171,308.20/x
  3. Step 3: Cross multiply
    260,100.40x = 389,713.20 × 171,308.20
  4. Step 4: Simplify right side
    260,100.40x = 66,761,066,808.24
  5. Step 5: Solve for x
    x = 66,761,066,808.24/260,100.40
  6. Step 6: Final answer
    x = 256,674.22

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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.