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Finding the Fourth Proportional to 400,447.17, 552,609.72 and 219,155.49

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Solution

The fourth proportional to 400,447.17, 552,609.72 and 219,155.49 is: 302,430.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,447.17 : 552,609.72 = 219,155.49 : x
  2. Step 2: Convert to fraction form
    400,447.17/552,609.72 = 219,155.49/x
  3. Step 3: Cross multiply
    400,447.17x = 552,609.72 × 219,155.49
  4. Step 4: Simplify right side
    400,447.17x = 121,107,453,965.36
  5. Step 5: Solve for x
    x = 121,107,453,965.36/400,447.17
  6. Step 6: Final answer
    x = 302,430.54

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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.