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Finding the Fourth Proportional to 376,169.51, 519,113.90 and 215,028.02

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Solution

The fourth proportional to 376,169.51, 519,113.90 and 215,028.02 is: 296,738.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,169.51 : 519,113.90 = 215,028.02 : x
  2. Step 2: Convert to fraction form
    376,169.51/519,113.90 = 215,028.02/x
  3. Step 3: Cross multiply
    376,169.51x = 519,113.90 × 215,028.02
  4. Step 4: Simplify right side
    376,169.51x = 111,624,035,906.83
  5. Step 5: Solve for x
    x = 111,624,035,906.83/376,169.51
  6. Step 6: Final answer
    x = 296,738.66

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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.