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Finding the Fourth Proportional to 400,246.88, 552,345.05 and 218,954.91

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Solution

The fourth proportional to 400,246.88, 552,345.05 and 218,954.91 is: 302,160.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,246.88 : 552,345.05 = 218,954.91 : x
  2. Step 2: Convert to fraction form
    400,246.88/552,345.05 = 218,954.91/x
  3. Step 3: Cross multiply
    400,246.88x = 552,345.05 × 218,954.91
  4. Step 4: Simplify right side
    400,246.88x = 120,938,659,616.92
  5. Step 5: Solve for x
    x = 120,938,659,616.92/400,246.88
  6. Step 6: Final answer
    x = 302,160.16

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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.