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Finding the Fourth Proportional to 399,603.38, 599,700.92 and 189,241.92

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Solution

The fourth proportional to 399,603.38, 599,700.92 and 189,241.92 is: 284,002.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,603.38 : 599,700.92 = 189,241.92 : x
  2. Step 2: Convert to fraction form
    399,603.38/599,700.92 = 189,241.92/x
  3. Step 3: Cross multiply
    399,603.38x = 599,700.92 × 189,241.92
  4. Step 4: Simplify right side
    399,603.38x = 113,488,552,580.36
  5. Step 5: Solve for x
    x = 113,488,552,580.36/399,603.38
  6. Step 6: Final answer
    x = 284,002.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.