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Finding the Fourth Proportional to 259,950.20, 389,269.20 and 170,720.60

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Solution

The fourth proportional to 259,950.20, 389,269.20 and 170,720.60 is: 255,650.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,950.20 : 389,269.20 = 170,720.60 : x
  2. Step 2: Convert to fraction form
    259,950.20/389,269.20 = 170,720.60/x
  3. Step 3: Cross multiply
    259,950.20x = 389,269.20 × 170,720.60
  4. Step 4: Simplify right side
    259,950.20x = 66,456,271,385.52
  5. Step 5: Solve for x
    x = 66,456,271,385.52/259,950.20
  6. Step 6: Final answer
    x = 255,650.01

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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.