Home / 400,815.81-553,131.72-219,544.56

Finding the Fourth Proportional to 400,815.81, 553,131.72 and 219,544.56

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Solution

The fourth proportional to 400,815.81, 553,131.72 and 219,544.56 is: 302,974.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,815.81 : 553,131.72 = 219,544.56 : x
  2. Step 2: Convert to fraction form
    400,815.81/553,131.72 = 219,544.56/x
  3. Step 3: Cross multiply
    400,815.81x = 553,131.72 × 219,544.56
  4. Step 4: Simplify right side
    400,815.81x = 121,437,060,089.44
  5. Step 5: Solve for x
    x = 121,437,060,089.44/400,815.81
  6. Step 6: Final answer
    x = 302,974.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.