Home / 680,147.70-1,020,221.55-206,832.30

Finding the Fourth Proportional to 680,147.70, 1,020,221.55 and 206,832.30

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Solution

The fourth proportional to 680,147.70, 1,020,221.55 and 206,832.30 is: 310,248.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,147.70 : 1,020,221.55 = 206,832.30 : x
  2. Step 2: Convert to fraction form
    680,147.70/1,020,221.55 = 206,832.30/x
  3. Step 3: Cross multiply
    680,147.70x = 1,020,221.55 × 206,832.30
  4. Step 4: Simplify right side
    680,147.70x = 211,014,769,696.07
  5. Step 5: Solve for x
    x = 211,014,769,696.07/680,147.70
  6. Step 6: Final answer
    x = 310,248.45

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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.