Home / 206,823.20-310,288.80-66,585.20

Finding the Fourth Proportional to 206,823.20, 310,288.80 and 66,585.20

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Solution

The fourth proportional to 206,823.20, 310,288.80 and 66,585.20 is: 99,895.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,823.20 : 310,288.80 = 66,585.20 : x
  2. Step 2: Convert to fraction form
    206,823.20/310,288.80 = 66,585.20/x
  3. Step 3: Cross multiply
    206,823.20x = 310,288.80 × 66,585.20
  4. Step 4: Simplify right side
    206,823.20x = 20,660,641,805.76
  5. Step 5: Solve for x
    x = 20,660,641,805.76/206,823.20
  6. Step 6: Final answer
    x = 99,895.18

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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.