Home / 393,277,309,685.15-542,716,911,514.29-219,664,982,775.73

Finding the Fourth Proportional to 393,277,309,685.15, 542,716,911,514.29 and 219,664,982,775.73

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Solution

The fourth proportional to 393,277,309,685.15, 542,716,911,514.29 and 219,664,982,775.73 is: 303,134,450,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,277,309,685.15 : 542,716,911,514.29 = 219,664,982,775.73 : x
  2. Step 2: Convert to fraction form
    393,277,309,685.15/542,716,911,514.29 = 219,664,982,775.73/x
  3. Step 3: Cross multiply
    393,277,309,685.15x = 542,716,911,514.29 × 219,664,982,775.73
  4. Step 4: Simplify right side
    393,277,309,685.15x = 119,215,901,019,883,903,647,744
  5. Step 5: Solve for x
    x = 119,215,901,019,883,903,647,744/393,277,309,685.15
  6. Step 6: Final answer
    x = 303,134,450,129.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.