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Finding the Fourth Proportional to 376,973.74, 520,209.48 and 215,843.86

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Solution

The fourth proportional to 376,973.74, 520,209.48 and 215,843.86 is: 297,856.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,973.74 : 520,209.48 = 215,843.86 : x
  2. Step 2: Convert to fraction form
    376,973.74/520,209.48 = 215,843.86/x
  3. Step 3: Cross multiply
    376,973.74x = 520,209.48 × 215,843.86
  4. Step 4: Simplify right side
    376,973.74x = 112,284,022,171.79
  5. Step 5: Solve for x
    x = 112,284,022,171.79/376,973.74
  6. Step 6: Final answer
    x = 297,856.35

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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.