Home / 401,002.20-553,389.87-219,731.79

Finding the Fourth Proportional to 401,002.20, 553,389.87 and 219,731.79

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Solution

The fourth proportional to 401,002.20, 553,389.87 and 219,731.79 is: 303,233.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,002.20 : 553,389.87 = 219,731.79 : x
  2. Step 2: Convert to fraction form
    401,002.20/553,389.87 = 219,731.79/x
  3. Step 3: Cross multiply
    401,002.20x = 553,389.87 × 219,731.79
  4. Step 4: Simplify right side
    401,002.20x = 121,597,346,702.97
  5. Step 5: Solve for x
    x = 121,597,346,702.97/401,002.20
  6. Step 6: Final answer
    x = 303,233.61

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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.