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Finding the Fourth Proportional to 410,197.60, 615,393.60 and 210,548.80

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Solution

The fourth proportional to 410,197.60, 615,393.60 and 210,548.80 is: 315,873.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,197.60 : 615,393.60 = 210,548.80 : x
  2. Step 2: Convert to fraction form
    410,197.60/615,393.60 = 210,548.80/x
  3. Step 3: Cross multiply
    410,197.60x = 615,393.60 × 210,548.80
  4. Step 4: Simplify right side
    410,197.60x = 129,570,384,007.68
  5. Step 5: Solve for x
    x = 129,570,384,007.68/410,197.60
  6. Step 6: Final answer
    x = 315,873.09

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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.