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Finding the Fourth Proportional to 376,990.17, 519,761.37 and 308,755.77

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Solution

The fourth proportional to 376,990.17, 519,761.37 and 308,755.77 is: 425,685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,990.17 : 519,761.37 = 308,755.77 : x
  2. Step 2: Convert to fraction form
    376,990.17/519,761.37 = 308,755.77/x
  3. Step 3: Cross multiply
    376,990.17x = 519,761.37 × 308,755.77
  4. Step 4: Simplify right side
    376,990.17x = 160,479,322,010.61
  5. Step 5: Solve for x
    x = 160,479,322,010.61/376,990.17
  6. Step 6: Final answer
    x = 425,685.69

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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.