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Finding the Fourth Proportional to 400,427.49, 552,582.54 and 219,135.78

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Solution

The fourth proportional to 400,427.49, 552,582.54 and 219,135.78 is: 302,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,427.49 : 552,582.54 = 219,135.78 : x
  2. Step 2: Convert to fraction form
    400,427.49/552,582.54 = 219,135.78/x
  3. Step 3: Cross multiply
    400,427.49x = 552,582.54 × 219,135.78
  4. Step 4: Simplify right side
    400,427.49x = 121,090,606,841.76
  5. Step 5: Solve for x
    x = 121,090,606,841.76/400,427.49
  6. Step 6: Final answer
    x = 302,403.33

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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.