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Finding the Fourth Proportional to 400,850.55, 553,173.64 and 219,573.77

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Solution

The fourth proportional to 400,850.55, 553,173.64 and 219,573.77 is: 303,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,850.55 : 553,173.64 = 219,573.77 : x
  2. Step 2: Convert to fraction form
    400,850.55/553,173.64 = 219,573.77/x
  3. Step 3: Cross multiply
    400,850.55x = 553,173.64 × 219,573.77
  4. Step 4: Simplify right side
    400,850.55x = 121,462,418,284.62
  5. Step 5: Solve for x
    x = 121,462,418,284.62/400,850.55
  6. Step 6: Final answer
    x = 303,011.73

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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.