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Finding the Fourth Proportional to 485,688,612.97, 728,584,001.31 and 158,189,674.39

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Solution

The fourth proportional to 485,688,612.97, 728,584,001.31 and 158,189,674.39 is: 237,301,149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,688,612.97 : 728,584,001.31 = 158,189,674.39 : x
  2. Step 2: Convert to fraction form
    485,688,612.97/728,584,001.31 = 158,189,674.39/x
  3. Step 3: Cross multiply
    485,688,612.97x = 728,584,001.31 × 158,189,674.39
  4. Step 4: Simplify right side
    485,688,612.97x = 115,254,465,935,858,624
  5. Step 5: Solve for x
    x = 115,254,465,935,858,624/485,688,612.97
  6. Step 6: Final answer
    x = 237,301,149.05

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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.