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Finding the Fourth Proportional to 409,183.60, 615,087.60 and 291,668.80

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Solution

The fourth proportional to 409,183.60, 615,087.60 and 291,668.80 is: 438,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,183.60 : 615,087.60 = 291,668.80 : x
  2. Step 2: Convert to fraction form
    409,183.60/615,087.60 = 291,668.80/x
  3. Step 3: Cross multiply
    409,183.60x = 615,087.60 × 291,668.80
  4. Step 4: Simplify right side
    409,183.60x = 179,401,862,186.88
  5. Step 5: Solve for x
    x = 179,401,862,186.88/409,183.60
  6. Step 6: Final answer
    x = 438,438.54

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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.