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Finding the Fourth Proportional to 376,489.84, 519,564.36 and 206,724.64

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Solution

The fourth proportional to 376,489.84, 519,564.36 and 206,724.64 is: 285,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,489.84 : 519,564.36 = 206,724.64 : x
  2. Step 2: Convert to fraction form
    376,489.84/519,564.36 = 206,724.64/x
  3. Step 3: Cross multiply
    376,489.84x = 519,564.36 × 206,724.64
  4. Step 4: Simplify right side
    376,489.84x = 107,406,755,277.83
  5. Step 5: Solve for x
    x = 107,406,755,277.83/376,489.84
  6. Step 6: Final answer
    x = 285,284.60

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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.