Home / 209,986.10-314,979.15-206,486.90

Finding the Fourth Proportional to 209,986.10, 314,979.15 and 206,486.90

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Solution

The fourth proportional to 209,986.10, 314,979.15 and 206,486.90 is: 309,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,986.10 : 314,979.15 = 206,486.90 : x
  2. Step 2: Convert to fraction form
    209,986.10/314,979.15 = 206,486.90/x
  3. Step 3: Cross multiply
    209,986.10x = 314,979.15 × 206,486.90
  4. Step 4: Simplify right side
    209,986.10x = 65,039,068,248.14
  5. Step 5: Solve for x
    x = 65,039,068,248.14/209,986.10
  6. Step 6: Final answer
    x = 309,730.35

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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.