Home / 398,714,358,309.72-550,225,841,312.24-218,273,265,560.42

Finding the Fourth Proportional to 398,714,358,309.72, 550,225,841,312.24 and 218,273,265,560.42

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Solution

The fourth proportional to 398,714,358,309.72, 550,225,841,312.24 and 218,273,265,560.42 is: 301,217,121,169.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,714,358,309.72 : 550,225,841,312.24 = 218,273,265,560.42 : x
  2. Step 2: Convert to fraction form
    398,714,358,309.72/550,225,841,312.24 = 218,273,265,560.42/x
  3. Step 3: Cross multiply
    398,714,358,309.72x = 550,225,841,312.24 × 218,273,265,560.42
  4. Step 4: Simplify right side
    398,714,358,309.72x = 120,099,591,178,952,078,524,416
  5. Step 5: Solve for x
    x = 120,099,591,178,952,078,524,416/398,714,358,309.72
  6. Step 6: Final answer
    x = 301,217,121,169.38

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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.