Home / 209,396.61-313,975.58-142,917.21

Finding the Fourth Proportional to 209,396.61, 313,975.58 and 142,917.21

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Solution

The fourth proportional to 209,396.61, 313,975.58 and 142,917.21 is: 214,294.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,396.61 : 313,975.58 = 142,917.21 : x
  2. Step 2: Convert to fraction form
    209,396.61/313,975.58 = 142,917.21/x
  3. Step 3: Cross multiply
    209,396.61x = 313,975.58 × 142,917.21
  4. Step 4: Simplify right side
    209,396.61x = 44,872,513,187.15
  5. Step 5: Solve for x
    x = 44,872,513,187.15/209,396.61
  6. Step 6: Final answer
    x = 214,294.36

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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.