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Finding the Fourth Proportional to 376,431.84, 519,441.39 and 223,443.90

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Solution

The fourth proportional to 376,431.84, 519,441.39 and 223,443.90 is: 308,332.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,431.84 : 519,441.39 = 223,443.90 : x
  2. Step 2: Convert to fraction form
    376,431.84/519,441.39 = 223,443.90/x
  3. Step 3: Cross multiply
    376,431.84x = 519,441.39 × 223,443.90
  4. Step 4: Simplify right side
    376,431.84x = 116,066,010,003.02
  5. Step 5: Solve for x
    x = 116,066,010,003.02/376,431.84
  6. Step 6: Final answer
    x = 308,332.07

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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.