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Finding the Fourth Proportional to 400,660.89, 552,894.93 and 219,369.52

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Solution

The fourth proportional to 400,660.89, 552,894.93 and 219,369.52 is: 302,720.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,660.89 : 552,894.93 = 219,369.52 : x
  2. Step 2: Convert to fraction form
    400,660.89/552,894.93 = 219,369.52/x
  3. Step 3: Cross multiply
    400,660.89x = 552,894.93 × 219,369.52
  4. Step 4: Simplify right side
    400,660.89x = 121,288,295,404.53
  5. Step 5: Solve for x
    x = 121,288,295,404.53/400,660.89
  6. Step 6: Final answer
    x = 302,720.58

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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.