Home / 209,815.20-314,815.82-109,951.65

Finding the Fourth Proportional to 209,815.20, 314,815.82 and 109,951.65

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Solution

The fourth proportional to 209,815.20, 314,815.82 and 109,951.65 is: 164,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,815.20 : 314,815.82 = 109,951.65 : x
  2. Step 2: Convert to fraction form
    209,815.20/314,815.82 = 109,951.65/x
  3. Step 3: Cross multiply
    209,815.20x = 314,815.82 × 109,951.65
  4. Step 4: Simplify right side
    209,815.20x = 34,614,518,305.34
  5. Step 5: Solve for x
    x = 34,614,518,305.34/209,815.20
  6. Step 6: Final answer
    x = 164,976.22

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1.5x scale

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.