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Finding the Fourth Proportional to 376,994, 520,251.72 and 215,902.35

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Solution

The fourth proportional to 376,994, 520,251.72 and 215,902.35 is: 297,945.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,994 : 520,251.72 = 215,902.35 : x
  2. Step 2: Convert to fraction form
    376,994/520,251.72 = 215,902.35/x
  3. Step 3: Cross multiply
    376,994x = 520,251.72 × 215,902.35
  4. Step 4: Simplify right side
    376,994x = 112,323,568,939.54
  5. Step 5: Solve for x
    x = 112,323,568,939.54/376,994
  6. Step 6: Final answer
    x = 297,945.24

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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.