Home / 312,115,744.24-430,719,690.14-186,667,920.78

Finding the Fourth Proportional to 312,115,744.24, 430,719,690.14 and 186,667,920.78

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Solution

The fourth proportional to 312,115,744.24, 430,719,690.14 and 186,667,920.78 is: 257,601,708.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,115,744.24 : 430,719,690.14 = 186,667,920.78 : x
  2. Step 2: Convert to fraction form
    312,115,744.24/430,719,690.14 = 186,667,920.78/x
  3. Step 3: Cross multiply
    312,115,744.24x = 430,719,690.14 × 186,667,920.78
  4. Step 4: Simplify right side
    312,115,744.24x = 80,401,548,995,591,136
  5. Step 5: Solve for x
    x = 80,401,548,995,591,136/312,115,744.24
  6. Step 6: Final answer
    x = 257,601,708.60

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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.