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Finding the Fourth Proportional to 288,039.70, 397,455.06 and 160,690.60

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Solution

The fourth proportional to 288,039.70, 397,455.06 and 160,690.60 is: 221,730.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,039.70 : 397,455.06 = 160,690.60 : x
  2. Step 2: Convert to fraction form
    288,039.70/397,455.06 = 160,690.60/x
  3. Step 3: Cross multiply
    288,039.70x = 397,455.06 × 160,690.60
  4. Step 4: Simplify right side
    288,039.70x = 63,867,292,064.44
  5. Step 5: Solve for x
    x = 63,867,292,064.44/288,039.70
  6. Step 6: Final answer
    x = 221,730.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.