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Finding the Fourth Proportional to 259,601.20, 389,401.80 and 110,010.40

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Solution

The fourth proportional to 259,601.20, 389,401.80 and 110,010.40 is: 165,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,601.20 : 389,401.80 = 110,010.40 : x
  2. Step 2: Convert to fraction form
    259,601.20/389,401.80 = 110,010.40/x
  3. Step 3: Cross multiply
    259,601.20x = 389,401.80 × 110,010.40
  4. Step 4: Simplify right side
    259,601.20x = 42,838,247,778.72
  5. Step 5: Solve for x
    x = 42,838,247,778.72/259,601.20
  6. Step 6: Final answer
    x = 165,015.60

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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.