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Finding the Fourth Proportional to 260,101.40, 389,568.90 and 225,109.40

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Solution

The fourth proportional to 260,101.40, 389,568.90 and 225,109.40 is: 337,159.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,101.40 : 389,568.90 = 225,109.40 : x
  2. Step 2: Convert to fraction form
    260,101.40/389,568.90 = 225,109.40/x
  3. Step 3: Cross multiply
    260,101.40x = 389,568.90 × 225,109.40
  4. Step 4: Simplify right side
    260,101.40x = 87,695,621,337.66
  5. Step 5: Solve for x
    x = 87,695,621,337.66/260,101.40
  6. Step 6: Final answer
    x = 337,159.36

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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.