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Finding the Fourth Proportional to 355,536.60, 490,690.62 and 217,797.72

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Solution

The fourth proportional to 355,536.60, 490,690.62 and 217,797.72 is: 300,591.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,536.60 : 490,690.62 = 217,797.72 : x
  2. Step 2: Convert to fraction form
    355,536.60/490,690.62 = 217,797.72/x
  3. Step 3: Cross multiply
    355,536.60x = 490,690.62 × 217,797.72
  4. Step 4: Simplify right side
    355,536.60x = 106,871,298,261.39
  5. Step 5: Solve for x
    x = 106,871,298,261.39/355,536.60
  6. Step 6: Final answer
    x = 300,591.55

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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.