Home / 213,621.40-319,994.70-108,499.60

Finding the Fourth Proportional to 213,621.40, 319,994.70 and 108,499.60

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Solution

The fourth proportional to 213,621.40, 319,994.70 and 108,499.60 is: 162,527.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,621.40 : 319,994.70 = 108,499.60 : x
  2. Step 2: Convert to fraction form
    213,621.40/319,994.70 = 108,499.60/x
  3. Step 3: Cross multiply
    213,621.40x = 319,994.70 × 108,499.60
  4. Step 4: Simplify right side
    213,621.40x = 34,719,296,952.12
  5. Step 5: Solve for x
    x = 34,719,296,952.12/213,621.40
  6. Step 6: Final answer
    x = 162,527.24

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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.