Home / 221,567.40-332,351.10-115,279.20

Finding the Fourth Proportional to 221,567.40, 332,351.10 and 115,279.20

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Solution

The fourth proportional to 221,567.40, 332,351.10 and 115,279.20 is: 172,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,567.40 : 332,351.10 = 115,279.20 : x
  2. Step 2: Convert to fraction form
    221,567.40/332,351.10 = 115,279.20/x
  3. Step 3: Cross multiply
    221,567.40x = 332,351.10 × 115,279.20
  4. Step 4: Simplify right side
    221,567.40x = 38,313,168,927.12
  5. Step 5: Solve for x
    x = 38,313,168,927.12/221,567.40
  6. Step 6: Final answer
    x = 172,918.80

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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.