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Finding the Fourth Proportional to 485,702,694.36, 728,605,071.54 and 158,203,730.88

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Solution

The fourth proportional to 485,702,694.36, 728,605,071.54 and 158,203,730.88 is: 237,322,217.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,702,694.36 : 728,605,071.54 = 158,203,730.88 : x
  2. Step 2: Convert to fraction form
    485,702,694.36/728,605,071.54 = 158,203,730.88/x
  3. Step 3: Cross multiply
    485,702,694.36x = 728,605,071.54 × 158,203,730.88
  4. Step 4: Simplify right side
    485,702,694.36x = 115,268,040,655,717,296
  5. Step 5: Solve for x
    x = 115,268,040,655,717,296/485,702,694.36
  6. Step 6: Final answer
    x = 237,322,217.88

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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.