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Finding the Fourth Proportional to 450,992.11, 622,379.17 and 257,395.94

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Solution

The fourth proportional to 450,992.11, 622,379.17 and 257,395.94 is: 355,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,992.11 : 622,379.17 = 257,395.94 : x
  2. Step 2: Convert to fraction form
    450,992.11/622,379.17 = 257,395.94/x
  3. Step 3: Cross multiply
    450,992.11x = 622,379.17 × 257,395.94
  4. Step 4: Simplify right side
    450,992.11x = 160,197,871,498.57
  5. Step 5: Solve for x
    x = 160,197,871,498.57/450,992.11
  6. Step 6: Final answer
    x = 355,212.14

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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.