Home / 377,887.13-521,507.82-208,121.21

Finding the Fourth Proportional to 377,887.13, 521,507.82 and 208,121.21

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Solution

The fourth proportional to 377,887.13, 521,507.82 and 208,121.21 is: 287,220.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,887.13 : 521,507.82 = 208,121.21 : x
  2. Step 2: Convert to fraction form
    377,887.13/521,507.82 = 208,121.21/x
  3. Step 3: Cross multiply
    377,887.13x = 521,507.82 × 208,121.21
  4. Step 4: Simplify right side
    377,887.13x = 108,536,838,522.86
  5. Step 5: Solve for x
    x = 108,536,838,522.86/377,887.13
  6. Step 6: Final answer
    x = 287,220.26

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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.