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Finding the Fourth Proportional to 376,997.49, 520,317.68 and 280,842.39

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Solution

The fourth proportional to 376,997.49, 520,317.68 and 280,842.39 is: 387,608.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,997.49 : 520,317.68 = 280,842.39 : x
  2. Step 2: Convert to fraction form
    376,997.49/520,317.68 = 280,842.39/x
  3. Step 3: Cross multiply
    376,997.49x = 520,317.68 × 280,842.39
  4. Step 4: Simplify right side
    376,997.49x = 146,127,259,406.24
  5. Step 5: Solve for x
    x = 146,127,259,406.24/376,997.49
  6. Step 6: Final answer
    x = 387,608.04

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1.5x scale

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.