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Finding the Fourth Proportional to 451,251.57, 622,744.43 and 257,690.87

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Solution

The fourth proportional to 451,251.57, 622,744.43 and 257,690.87 is: 355,623.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,251.57 : 622,744.43 = 257,690.87 : x
  2. Step 2: Convert to fraction form
    451,251.57/622,744.43 = 257,690.87/x
  3. Step 3: Cross multiply
    451,251.57x = 622,744.43 × 257,690.87
  4. Step 4: Simplify right side
    451,251.57x = 160,475,553,954.35
  5. Step 5: Solve for x
    x = 160,475,553,954.35/451,251.57
  6. Step 6: Final answer
    x = 355,623.26

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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.