Home / 342,749.09-513,788.05-143,126.56

Finding the Fourth Proportional to 342,749.09, 513,788.05 and 143,126.56

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Solution

The fourth proportional to 342,749.09, 513,788.05 and 143,126.56 is: 214,549.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,749.09 : 513,788.05 = 143,126.56 : x
  2. Step 2: Convert to fraction form
    342,749.09/513,788.05 = 143,126.56/x
  3. Step 3: Cross multiply
    342,749.09x = 513,788.05 × 143,126.56
  4. Step 4: Simplify right side
    342,749.09x = 73,536,717,389.29
  5. Step 5: Solve for x
    x = 73,536,717,389.29/342,749.09
  6. Step 6: Final answer
    x = 214,549.71

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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.