Home / 420,831.41-631,458.27-196,209.42

Finding the Fourth Proportional to 420,831.41, 631,458.27 and 196,209.42

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Solution

The fourth proportional to 420,831.41, 631,458.27 and 196,209.42 is: 294,412.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,831.41 : 631,458.27 = 196,209.42 : x
  2. Step 2: Convert to fraction form
    420,831.41/631,458.27 = 196,209.42/x
  3. Step 3: Cross multiply
    420,831.41x = 631,458.27 × 196,209.42
  4. Step 4: Simplify right side
    420,831.41x = 123,898,060,910.90
  5. Step 5: Solve for x
    x = 123,898,060,910.90/420,831.41
  6. Step 6: Final answer
    x = 294,412.58

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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.