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Finding the Fourth Proportional to 409,786.60, 615,068.70 and 252,322.60

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Solution

The fourth proportional to 409,786.60, 615,068.70 and 252,322.60 is: 378,723.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,786.60 : 615,068.70 = 252,322.60 : x
  2. Step 2: Convert to fraction form
    409,786.60/615,068.70 = 252,322.60/x
  3. Step 3: Cross multiply
    409,786.60x = 615,068.70 × 252,322.60
  4. Step 4: Simplify right side
    409,786.60x = 155,195,733,562.62
  5. Step 5: Solve for x
    x = 155,195,733,562.62/409,786.60
  6. Step 6: Final answer
    x = 378,723.30

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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.