Home / 209,390.31-313,966.44-142,911

Finding the Fourth Proportional to 209,390.31, 313,966.44 and 142,911

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Solution

The fourth proportional to 209,390.31, 313,966.44 and 142,911 is: 214,285.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,390.31 : 313,966.44 = 142,911 : x
  2. Step 2: Convert to fraction form
    209,390.31/313,966.44 = 142,911/x
  3. Step 3: Cross multiply
    209,390.31x = 313,966.44 × 142,911
  4. Step 4: Simplify right side
    209,390.31x = 44,869,257,906.84
  5. Step 5: Solve for x
    x = 44,869,257,906.84/209,390.31
  6. Step 6: Final answer
    x = 214,285.26

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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.