Home / 245,831.64-339,221.70-138,399.72

Finding the Fourth Proportional to 245,831.64, 339,221.70 and 138,399.72

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Solution

The fourth proportional to 245,831.64, 339,221.70 and 138,399.72 is: 190,977.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,831.64 : 339,221.70 = 138,399.72 : x
  2. Step 2: Convert to fraction form
    245,831.64/339,221.70 = 138,399.72/x
  3. Step 3: Cross multiply
    245,831.64x = 339,221.70 × 138,399.72
  4. Step 4: Simplify right side
    245,831.64x = 46,948,188,297.92
  5. Step 5: Solve for x
    x = 46,948,188,297.92/245,831.64
  6. Step 6: Final answer
    x = 190,977.00

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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.