Home / 215,987.66-324,090.82-145,719.36

Finding the Fourth Proportional to 215,987.66, 324,090.82 and 145,719.36

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Solution

The fourth proportional to 215,987.66, 324,090.82 and 145,719.36 is: 218,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,987.66 : 324,090.82 = 145,719.36 : x
  2. Step 2: Convert to fraction form
    215,987.66/324,090.82 = 145,719.36/x
  3. Step 3: Cross multiply
    215,987.66x = 324,090.82 × 145,719.36
  4. Step 4: Simplify right side
    215,987.66x = 47,226,306,872.28
  5. Step 5: Solve for x
    x = 47,226,306,872.28/215,987.66
  6. Step 6: Final answer
    x = 218,652.80

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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.