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Finding the Fourth Proportional to 400,477.62, 552,636.63 and 219,189.18

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Solution

The fourth proportional to 400,477.62, 552,636.63 and 219,189.18 is: 302,468.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,477.62 : 552,636.63 = 219,189.18 : x
  2. Step 2: Convert to fraction form
    400,477.62/552,636.63 = 219,189.18/x
  3. Step 3: Cross multiply
    400,477.62x = 552,636.63 × 219,189.18
  4. Step 4: Simplify right side
    400,477.62x = 121,131,969,767.66
  5. Step 5: Solve for x
    x = 121,131,969,767.66/400,477.62
  6. Step 6: Final answer
    x = 302,468.76

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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.