Home / 213,273.37-319,909.15-86,885.43

Finding the Fourth Proportional to 213,273.37, 319,909.15 and 86,885.43

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Solution

The fourth proportional to 213,273.37, 319,909.15 and 86,885.43 is: 130,327.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,273.37 : 319,909.15 = 86,885.43 : x
  2. Step 2: Convert to fraction form
    213,273.37/319,909.15 = 86,885.43/x
  3. Step 3: Cross multiply
    213,273.37x = 319,909.15 × 86,885.43
  4. Step 4: Simplify right side
    213,273.37x = 27,795,442,478.90
  5. Step 5: Solve for x
    x = 27,795,442,478.90/213,273.37
  6. Step 6: Final answer
    x = 130,327.77

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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.