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Finding the Fourth Proportional to 288,847.36, 398,606.08 and 168,012.80

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Solution

The fourth proportional to 288,847.36, 398,606.08 and 168,012.80 is: 231,855.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,847.36 : 398,606.08 = 168,012.80 : x
  2. Step 2: Convert to fraction form
    288,847.36/398,606.08 = 168,012.80/x
  3. Step 3: Cross multiply
    288,847.36x = 398,606.08 × 168,012.80
  4. Step 4: Simplify right side
    288,847.36x = 66,970,923,597.82
  5. Step 5: Solve for x
    x = 66,970,923,597.82/288,847.36
  6. Step 6: Final answer
    x = 231,855.76

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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.