Home / 213,134.28-319,291.08-133,203.48

Finding the Fourth Proportional to 213,134.28, 319,291.08 and 133,203.48

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Solution

The fourth proportional to 213,134.28, 319,291.08 and 133,203.48 is: 199,548.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,134.28 : 319,291.08 = 133,203.48 : x
  2. Step 2: Convert to fraction form
    213,134.28/319,291.08 = 133,203.48/x
  3. Step 3: Cross multiply
    213,134.28x = 319,291.08 × 133,203.48
  4. Step 4: Simplify right side
    213,134.28x = 42,530,682,988.96
  5. Step 5: Solve for x
    x = 42,530,682,988.96/213,134.28
  6. Step 6: Final answer
    x = 199,548.77

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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.