Home / 219,762.20-329,643.30-131,115.80

Finding the Fourth Proportional to 219,762.20, 329,643.30 and 131,115.80

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Solution

The fourth proportional to 219,762.20, 329,643.30 and 131,115.80 is: 196,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,762.20 : 329,643.30 = 131,115.80 : x
  2. Step 2: Convert to fraction form
    219,762.20/329,643.30 = 131,115.80/x
  3. Step 3: Cross multiply
    219,762.20x = 329,643.30 × 131,115.80
  4. Step 4: Simplify right side
    219,762.20x = 43,221,444,994.14
  5. Step 5: Solve for x
    x = 43,221,444,994.14/219,762.20
  6. Step 6: Final answer
    x = 196,673.70

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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.