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Finding the Fourth Proportional to 401,076.32, 553,485.83 and 219,794.87

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Solution

The fourth proportional to 401,076.32, 553,485.83 and 219,794.87 is: 303,317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,076.32 : 553,485.83 = 219,794.87 : x
  2. Step 2: Convert to fraction form
    401,076.32/553,485.83 = 219,794.87/x
  3. Step 3: Cross multiply
    401,076.32x = 553,485.83 × 219,794.87
  4. Step 4: Simplify right side
    401,076.32x = 121,653,346,336.43
  5. Step 5: Solve for x
    x = 121,653,346,336.43/401,076.32
  6. Step 6: Final answer
    x = 303,317.20

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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.