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Finding the Fourth Proportional to 202,179.40, 302,831.70 and 131,320.60

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Solution

The fourth proportional to 202,179.40, 302,831.70 and 131,320.60 is: 196,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,179.40 : 302,831.70 = 131,320.60 : x
  2. Step 2: Convert to fraction form
    202,179.40/302,831.70 = 131,320.60/x
  3. Step 3: Cross multiply
    202,179.40x = 302,831.70 × 131,320.60
  4. Step 4: Simplify right side
    202,179.40x = 39,768,040,543.02
  5. Step 5: Solve for x
    x = 39,768,040,543.02/202,179.40
  6. Step 6: Final answer
    x = 196,696.80

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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.