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Finding the Fourth Proportional to 377,645.36, 521,163 and 207,892.40

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Solution

The fourth proportional to 377,645.36, 521,163 and 207,892.40 is: 286,898.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,645.36 : 521,163 = 207,892.40 : x
  2. Step 2: Convert to fraction form
    377,645.36/521,163 = 207,892.40/x
  3. Step 3: Cross multiply
    377,645.36x = 521,163 × 207,892.40
  4. Step 4: Simplify right side
    377,645.36x = 108,345,826,861.20
  5. Step 5: Solve for x
    x = 108,345,826,861.20/377,645.36
  6. Step 6: Final answer
    x = 286,898.34

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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.