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Finding the Fourth Proportional to 376,858.76, 520,063.50 and 215,713

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Solution

The fourth proportional to 376,858.76, 520,063.50 and 215,713 is: 297,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,858.76 : 520,063.50 = 215,713 : x
  2. Step 2: Convert to fraction form
    376,858.76/520,063.50 = 215,713/x
  3. Step 3: Cross multiply
    376,858.76x = 520,063.50 × 215,713
  4. Step 4: Simplify right side
    376,858.76x = 112,184,457,775.50
  5. Step 5: Solve for x
    x = 112,184,457,775.50/376,858.76
  6. Step 6: Final answer
    x = 297,683.03

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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.