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Finding the Fourth Proportional to 485,769,411.68, 728,653,546.44 and 158,244,388.88

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Solution

The fourth proportional to 485,769,411.68, 728,653,546.44 and 158,244,388.88 is: 237,366,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,769,411.68 : 728,653,546.44 = 158,244,388.88 : x
  2. Step 2: Convert to fraction form
    485,769,411.68/728,653,546.44 = 158,244,388.88/x
  3. Step 3: Cross multiply
    485,769,411.68x = 728,653,546.44 × 158,244,388.88
  4. Step 4: Simplify right side
    485,769,411.68x = 115,305,335,161,642,512
  5. Step 5: Solve for x
    x = 115,305,335,161,642,512/485,769,411.68
  6. Step 6: Final answer
    x = 237,366,397.28

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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.