Home / 620,831.80-931,247.70-221,485.60

Finding the Fourth Proportional to 620,831.80, 931,247.70 and 221,485.60

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Solution

The fourth proportional to 620,831.80, 931,247.70 and 221,485.60 is: 332,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,831.80 : 931,247.70 = 221,485.60 : x
  2. Step 2: Convert to fraction form
    620,831.80/931,247.70 = 221,485.60/x
  3. Step 3: Cross multiply
    620,831.80x = 931,247.70 × 221,485.60
  4. Step 4: Simplify right side
    620,831.80x = 206,257,955,583.12
  5. Step 5: Solve for x
    x = 206,257,955,583.12/620,831.80
  6. Step 6: Final answer
    x = 332,228.40

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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.