Home / 319,974.20-479,831.70-109,503.80

Finding the Fourth Proportional to 319,974.20, 479,831.70 and 109,503.80

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Solution

The fourth proportional to 319,974.20, 479,831.70 and 109,503.80 is: 164,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,974.20 : 479,831.70 = 109,503.80 : x
  2. Step 2: Convert to fraction form
    319,974.20/479,831.70 = 109,503.80/x
  3. Step 3: Cross multiply
    319,974.20x = 479,831.70 × 109,503.80
  4. Step 4: Simplify right side
    319,974.20x = 52,543,394,510.46
  5. Step 5: Solve for x
    x = 52,543,394,510.46/319,974.20
  6. Step 6: Final answer
    x = 164,211.35

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1.5x scale

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.