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Finding the Fourth Proportional to 400,251.16, 552,344.63 and 218,959.80

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Solution

The fourth proportional to 400,251.16, 552,344.63 and 218,959.80 is: 302,163.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,251.16 : 552,344.63 = 218,959.80 : x
  2. Step 2: Convert to fraction form
    400,251.16/552,344.63 = 218,959.80/x
  3. Step 3: Cross multiply
    400,251.16x = 552,344.63 × 218,959.80
  4. Step 4: Simplify right side
    400,251.16x = 120,941,269,715.87
  5. Step 5: Solve for x
    x = 120,941,269,715.87/400,251.16
  6. Step 6: Final answer
    x = 302,163.45

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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.