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Finding the Fourth Proportional to 202,981.20, 304,471.80 and 53,221.20

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Solution

The fourth proportional to 202,981.20, 304,471.80 and 53,221.20 is: 79,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,981.20 : 304,471.80 = 53,221.20 : x
  2. Step 2: Convert to fraction form
    202,981.20/304,471.80 = 53,221.20/x
  3. Step 3: Cross multiply
    202,981.20x = 304,471.80 × 53,221.20
  4. Step 4: Simplify right side
    202,981.20x = 16,204,354,562.16
  5. Step 5: Solve for x
    x = 16,204,354,562.16/202,981.20
  6. Step 6: Final answer
    x = 79,831.80

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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.