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Finding the Fourth Proportional to 401,171.69, 553,613.64 and 219,883.21

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Solution

The fourth proportional to 401,171.69, 553,613.64 and 219,883.21 is: 303,437.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,171.69 : 553,613.64 = 219,883.21 : x
  2. Step 2: Convert to fraction form
    401,171.69/553,613.64 = 219,883.21/x
  3. Step 3: Cross multiply
    401,171.69x = 553,613.64 × 219,883.21
  4. Step 4: Simplify right side
    401,171.69x = 121,730,342,054.39
  5. Step 5: Solve for x
    x = 121,730,342,054.39/401,171.69
  6. Step 6: Final answer
    x = 303,437.02

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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.