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Finding the Fourth Proportional to 253,919.80, 380,879.70 and 160,838.20

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Solution

The fourth proportional to 253,919.80, 380,879.70 and 160,838.20 is: 241,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,919.80 : 380,879.70 = 160,838.20 : x
  2. Step 2: Convert to fraction form
    253,919.80/380,879.70 = 160,838.20/x
  3. Step 3: Cross multiply
    253,919.80x = 380,879.70 × 160,838.20
  4. Step 4: Simplify right side
    253,919.80x = 61,260,005,364.54
  5. Step 5: Solve for x
    x = 61,260,005,364.54/253,919.80
  6. Step 6: Final answer
    x = 241,257.30

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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.