Home / 431,831.32-647,830.00-165,571.07

Finding the Fourth Proportional to 431,831.32, 647,830.00 and 165,571.07

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Solution

The fourth proportional to 431,831.32, 647,830.00 and 165,571.07 is: 248,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,831.32 : 647,830.00 = 165,571.07 : x
  2. Step 2: Convert to fraction form
    431,831.32/647,830.00 = 165,571.07/x
  3. Step 3: Cross multiply
    431,831.32x = 647,830.00 × 165,571.07
  4. Step 4: Simplify right side
    431,831.32x = 107,261,902,831.99
  5. Step 5: Solve for x
    x = 107,261,902,831.99/431,831.32
  6. Step 6: Final answer
    x = 248,388.43

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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.