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Finding the Fourth Proportional to 377,892, 521,491.68 and 208,141.92

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Solution

The fourth proportional to 377,892, 521,491.68 and 208,141.92 is: 287,236.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,892 : 521,491.68 = 208,141.92 : x
  2. Step 2: Convert to fraction form
    377,892/521,491.68 = 208,141.92/x
  3. Step 3: Cross multiply
    377,892x = 521,491.68 × 208,141.92
  4. Step 4: Simplify right side
    377,892x = 108,544,279,539.23
  5. Step 5: Solve for x
    x = 108,544,279,539.23/377,892
  6. Step 6: Final answer
    x = 287,236.25

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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.