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Finding the Fourth Proportional to 254,911.60, 382,021.80 and 170,431.60

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Solution

The fourth proportional to 254,911.60, 382,021.80 and 170,431.60 is: 255,416.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,911.60 : 382,021.80 = 170,431.60 : x
  2. Step 2: Convert to fraction form
    254,911.60/382,021.80 = 170,431.60/x
  3. Step 3: Cross multiply
    254,911.60x = 382,021.80 × 170,431.60
  4. Step 4: Simplify right side
    254,911.60x = 65,108,586,608.88
  5. Step 5: Solve for x
    x = 65,108,586,608.88/254,911.60
  6. Step 6: Final answer
    x = 255,416.33

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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.