Home / 265,749.05-398,853.89-139,478.49

Finding the Fourth Proportional to 265,749.05, 398,853.89 and 139,478.49

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Solution

The fourth proportional to 265,749.05, 398,853.89 and 139,478.49 is: 209,338.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,749.05 : 398,853.89 = 139,478.49 : x
  2. Step 2: Convert to fraction form
    265,749.05/398,853.89 = 139,478.49/x
  3. Step 3: Cross multiply
    265,749.05x = 398,853.89 × 139,478.49
  4. Step 4: Simplify right side
    265,749.05x = 55,631,538,133.48
  5. Step 5: Solve for x
    x = 55,631,538,133.48/265,749.05
  6. Step 6: Final answer
    x = 209,338.61

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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.