Home / 377,887.38-521,508.15-208,121.46

Finding the Fourth Proportional to 377,887.38, 521,508.15 and 208,121.46

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Solution

The fourth proportional to 377,887.38, 521,508.15 and 208,121.46 is: 287,220.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,887.38 : 521,508.15 = 208,121.46 : x
  2. Step 2: Convert to fraction form
    377,887.38/521,508.15 = 208,121.46/x
  3. Step 3: Cross multiply
    377,887.38x = 521,508.15 × 208,121.46
  4. Step 4: Simplify right side
    377,887.38x = 108,537,037,579.90
  5. Step 5: Solve for x
    x = 108,537,037,579.90/377,887.38
  6. Step 6: Final answer
    x = 287,220.59

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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.