Home / 290,662.20-401,067.18-163,337.40

Finding the Fourth Proportional to 290,662.20, 401,067.18 and 163,337.40

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Solution

The fourth proportional to 290,662.20, 401,067.18 and 163,337.40 is: 225,379.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,662.20 : 401,067.18 = 163,337.40 : x
  2. Step 2: Convert to fraction form
    290,662.20/401,067.18 = 163,337.40/x
  3. Step 3: Cross multiply
    290,662.20x = 401,067.18 × 163,337.40
  4. Step 4: Simplify right side
    290,662.20x = 65,509,270,406.53
  5. Step 5: Solve for x
    x = 65,509,270,406.53/290,662.20
  6. Step 6: Final answer
    x = 225,379.39

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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.