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Finding the Fourth Proportional to 260,149.20, 390,223.80 and 166,837.20

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Solution

The fourth proportional to 260,149.20, 390,223.80 and 166,837.20 is: 250,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,149.20 : 390,223.80 = 166,837.20 : x
  2. Step 2: Convert to fraction form
    260,149.20/390,223.80 = 166,837.20/x
  3. Step 3: Cross multiply
    260,149.20x = 390,223.80 × 166,837.20
  4. Step 4: Simplify right side
    260,149.20x = 65,103,846,165.36
  5. Step 5: Solve for x
    x = 65,103,846,165.36/260,149.20
  6. Step 6: Final answer
    x = 250,255.80

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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.