Home / 680,100.18-1,020,207.36-206,789.64

Finding the Fourth Proportional to 680,100.18, 1,020,207.36 and 206,789.64

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Solution

The fourth proportional to 680,100.18, 1,020,207.36 and 206,789.64 is: 310,201.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,100.18 : 1,020,207.36 = 206,789.64 : x
  2. Step 2: Convert to fraction form
    680,100.18/1,020,207.36 = 206,789.64/x
  3. Step 3: Cross multiply
    680,100.18x = 1,020,207.36 × 206,789.64
  4. Step 4: Simplify right side
    680,100.18x = 210,968,312,699.75
  5. Step 5: Solve for x
    x = 210,968,312,699.75/680,100.18
  6. Step 6: Final answer
    x = 310,201.82

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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.