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Finding the Fourth Proportional to 400,791.69, 553,092.53 and 219,504.05

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Solution

The fourth proportional to 400,791.69, 553,092.53 and 219,504.05 is: 302,915.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,791.69 : 553,092.53 = 219,504.05 : x
  2. Step 2: Convert to fraction form
    400,791.69/553,092.53 = 219,504.05/x
  3. Step 3: Cross multiply
    400,791.69x = 553,092.53 × 219,504.05
  4. Step 4: Simplify right side
    400,791.69x = 121,406,046,496.76
  5. Step 5: Solve for x
    x = 121,406,046,496.76/400,791.69
  6. Step 6: Final answer
    x = 302,915.58

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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.