Home / 312,115,744.80-430,719,690.92-186,667,921.34

Finding the Fourth Proportional to 312,115,744.80, 430,719,690.92 and 186,667,921.34

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Solution

The fourth proportional to 312,115,744.80, 430,719,690.92 and 186,667,921.34 is: 257,601,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,115,744.80 : 430,719,690.92 = 186,667,921.34 : x
  2. Step 2: Convert to fraction form
    312,115,744.80/430,719,690.92 = 186,667,921.34/x
  3. Step 3: Cross multiply
    312,115,744.80x = 430,719,690.92 × 186,667,921.34
  4. Step 4: Simplify right side
    312,115,744.80x = 80,401,549,382,771,936
  5. Step 5: Solve for x
    x = 80,401,549,382,771,936/312,115,744.80
  6. Step 6: Final answer
    x = 257,601,709.37

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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.