Home / 252,601,286.40-378,901,929.60-221,360,428.80

Finding the Fourth Proportional to 252,601,286.40, 378,901,929.60 and 221,360,428.80

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Solution

The fourth proportional to 252,601,286.40, 378,901,929.60 and 221,360,428.80 is: 332,040,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,601,286.40 : 378,901,929.60 = 221,360,428.80 : x
  2. Step 2: Convert to fraction form
    252,601,286.40/378,901,929.60 = 221,360,428.80/x
  3. Step 3: Cross multiply
    252,601,286.40x = 378,901,929.60 × 221,360,428.80
  4. Step 4: Simplify right side
    252,601,286.40x = 83,873,893,609,403,424
  5. Step 5: Solve for x
    x = 83,873,893,609,403,424/252,601,286.40
  6. Step 6: Final answer
    x = 332,040,643.20

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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.