Home / 209,555.39-314,379.97-76,435.65

Finding the Fourth Proportional to 209,555.39, 314,379.97 and 76,435.65

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Solution

The fourth proportional to 209,555.39, 314,379.97 and 76,435.65 is: 114,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,555.39 : 314,379.97 = 76,435.65 : x
  2. Step 2: Convert to fraction form
    209,555.39/314,379.97 = 76,435.65/x
  3. Step 3: Cross multiply
    209,555.39x = 314,379.97 × 76,435.65
  4. Step 4: Simplify right side
    209,555.39x = 24,029,837,353.93
  5. Step 5: Solve for x
    x = 24,029,837,353.93/209,555.39
  6. Step 6: Final answer
    x = 114,670.58

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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.