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Finding the Fourth Proportional to 376,993, 520,250.34 and 215,901.35

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Solution

The fourth proportional to 376,993, 520,250.34 and 215,901.35 is: 297,943.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,993 : 520,250.34 = 215,901.35 : x
  2. Step 2: Convert to fraction form
    376,993/520,250.34 = 215,901.35/x
  3. Step 3: Cross multiply
    376,993x = 520,250.34 × 215,901.35
  4. Step 4: Simplify right side
    376,993x = 112,322,750,743.96
  5. Step 5: Solve for x
    x = 112,322,750,743.96/376,993
  6. Step 6: Final answer
    x = 297,943.86

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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.