Home / 245,917.35-339,372.27-138,491.10

Finding the Fourth Proportional to 245,917.35, 339,372.27 and 138,491.10

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Solution

The fourth proportional to 245,917.35, 339,372.27 and 138,491.10 is: 191,121.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,917.35 : 339,372.27 = 138,491.10 : x
  2. Step 2: Convert to fraction form
    245,917.35/339,372.27 = 138,491.10/x
  3. Step 3: Cross multiply
    245,917.35x = 339,372.27 × 138,491.10
  4. Step 4: Simplify right side
    245,917.35x = 47,000,038,981.80
  5. Step 5: Solve for x
    x = 47,000,038,981.80/245,917.35
  6. Step 6: Final answer
    x = 191,121.28

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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.