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Finding the Fourth Proportional to 485,976.69, 728,961.93 and 165,974.18

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Solution

The fourth proportional to 485,976.69, 728,961.93 and 165,974.18 is: 248,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,976.69 : 728,961.93 = 165,974.18 : x
  2. Step 2: Convert to fraction form
    485,976.69/728,961.93 = 165,974.18/x
  3. Step 3: Cross multiply
    485,976.69x = 728,961.93 × 165,974.18
  4. Step 4: Simplify right side
    485,976.69x = 120,988,854,938.16
  5. Step 5: Solve for x
    x = 120,988,854,938.16/485,976.69
  6. Step 6: Final answer
    x = 248,960.20

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1.5x scale

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.