Home / 355,919,212.20-533,878,818.30-279,478,021.80

Finding the Fourth Proportional to 355,919,212.20, 533,878,818.30 and 279,478,021.80

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Solution

The fourth proportional to 355,919,212.20, 533,878,818.30 and 279,478,021.80 is: 419,217,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,919,212.20 : 533,878,818.30 = 279,478,021.80 : x
  2. Step 2: Convert to fraction form
    355,919,212.20/533,878,818.30 = 279,478,021.80/x
  3. Step 3: Cross multiply
    355,919,212.20x = 533,878,818.30 × 279,478,021.80
  4. Step 4: Simplify right side
    355,919,212.20x = 149,207,396,019,405,664
  5. Step 5: Solve for x
    x = 149,207,396,019,405,664/355,919,212.20
  6. Step 6: Final answer
    x = 419,217,032.70

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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.