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Finding the Fourth Proportional to 400,615.92, 552,856.55 and 219,324.78

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Solution

The fourth proportional to 400,615.92, 552,856.55 and 219,324.78 is: 302,671.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,615.92 : 552,856.55 = 219,324.78 : x
  2. Step 2: Convert to fraction form
    400,615.92/552,856.55 = 219,324.78/x
  3. Step 3: Cross multiply
    400,615.92x = 552,856.55 × 219,324.78
  4. Step 4: Simplify right side
    400,615.92x = 121,255,140,103.69
  5. Step 5: Solve for x
    x = 121,255,140,103.69/400,615.92
  6. Step 6: Final answer
    x = 302,671.80

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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.