Home / 680,166.60-1,020,288.30-206,867.40

Finding the Fourth Proportional to 680,166.60, 1,020,288.30 and 206,867.40

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Solution

The fourth proportional to 680,166.60, 1,020,288.30 and 206,867.40 is: 310,312.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,166.60 : 1,020,288.30 = 206,867.40 : x
  2. Step 2: Convert to fraction form
    680,166.60/1,020,288.30 = 206,867.40/x
  3. Step 3: Cross multiply
    680,166.60x = 1,020,288.30 × 206,867.40
  4. Step 4: Simplify right side
    680,166.60x = 211,064,387,871.42
  5. Step 5: Solve for x
    x = 211,064,387,871.42/680,166.60
  6. Step 6: Final answer
    x = 310,312.78

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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.