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Finding the Fourth Proportional to 376,991.17, 519,762.75 and 308,756.77

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Solution

The fourth proportional to 376,991.17, 519,762.75 and 308,756.77 is: 425,687.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,991.17 : 519,762.75 = 308,756.77 : x
  2. Step 2: Convert to fraction form
    376,991.17/519,762.75 = 308,756.77/x
  3. Step 3: Cross multiply
    376,991.17x = 519,762.75 × 308,756.77
  4. Step 4: Simplify right side
    376,991.17x = 160,480,267,856.32
  5. Step 5: Solve for x
    x = 160,480,267,856.32/376,991.17
  6. Step 6: Final answer
    x = 425,687.07

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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.