Home / 215,035.20-322,290.36-121,347.36

Finding the Fourth Proportional to 215,035.20, 322,290.36 and 121,347.36

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Solution

The fourth proportional to 215,035.20, 322,290.36 and 121,347.36 is: 181,872.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,035.20 : 322,290.36 = 121,347.36 : x
  2. Step 2: Convert to fraction form
    215,035.20/322,290.36 = 121,347.36/x
  3. Step 3: Cross multiply
    215,035.20x = 322,290.36 × 121,347.36
  4. Step 4: Simplify right side
    215,035.20x = 39,109,084,339.45
  5. Step 5: Solve for x
    x = 39,109,084,339.45/215,035.20
  6. Step 6: Final answer
    x = 181,872.94

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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.