Home / 377,677.12-521,174.40-207,878.56

Finding the Fourth Proportional to 377,677.12, 521,174.40 and 207,878.56

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Solution

The fourth proportional to 377,677.12, 521,174.40 and 207,878.56 is: 286,861.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,677.12 : 521,174.40 = 207,878.56 : x
  2. Step 2: Convert to fraction form
    377,677.12/521,174.40 = 207,878.56/x
  3. Step 3: Cross multiply
    377,677.12x = 521,174.40 × 207,878.56
  4. Step 4: Simplify right side
    377,677.12x = 108,340,983,780.86
  5. Step 5: Solve for x
    x = 108,340,983,780.86/377,677.12
  6. Step 6: Final answer
    x = 286,861.39

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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.