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Finding the Fourth Proportional to 400,398.37, 552,549.78 and 219,110.29

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Solution

The fourth proportional to 400,398.37, 552,549.78 and 219,110.29 is: 302,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,398.37 : 552,549.78 = 219,110.29 : x
  2. Step 2: Convert to fraction form
    400,398.37/552,549.78 = 219,110.29/x
  3. Step 3: Cross multiply
    400,398.37x = 552,549.78 × 219,110.29
  4. Step 4: Simplify right side
    400,398.37x = 121,069,341,153.86
  5. Step 5: Solve for x
    x = 121,069,341,153.86/400,398.37
  6. Step 6: Final answer
    x = 302,372.21

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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.