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Finding the Fourth Proportional to 288,558.21, 398,003.81 and 202,536.39

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Solution

The fourth proportional to 288,558.21, 398,003.81 and 202,536.39 is: 279,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,558.21 : 398,003.81 = 202,536.39 : x
  2. Step 2: Convert to fraction form
    288,558.21/398,003.81 = 202,536.39/x
  3. Step 3: Cross multiply
    288,558.21x = 398,003.81 × 202,536.39
  4. Step 4: Simplify right side
    288,558.21x = 80,610,253,870.96
  5. Step 5: Solve for x
    x = 80,610,253,870.96/288,558.21
  6. Step 6: Final answer
    x = 279,355.26

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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.