Home / 485,055,256.20-727,589,105.10-161,939,128.20

Finding the Fourth Proportional to 485,055,256.20, 727,589,105.10 and 161,939,128.20

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Solution

The fourth proportional to 485,055,256.20, 727,589,105.10 and 161,939,128.20 is: 242,910,769.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,055,256.20 : 727,589,105.10 = 161,939,128.20 : x
  2. Step 2: Convert to fraction form
    485,055,256.20/727,589,105.10 = 161,939,128.20/x
  3. Step 3: Cross multiply
    485,055,256.20x = 727,589,105.10 × 161,939,128.20
  4. Step 4: Simplify right side
    485,055,256.20x = 117,825,145,367,712,176
  5. Step 5: Solve for x
    x = 117,825,145,367,712,176/485,055,256.20
  6. Step 6: Final answer
    x = 242,910,769.16

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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.