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Finding the Fourth Proportional to 377,658.68, 521,169 and 207,891.50

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Solution

The fourth proportional to 377,658.68, 521,169 and 207,891.50 is: 286,890.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,658.68 : 521,169 = 207,891.50 : x
  2. Step 2: Convert to fraction form
    377,658.68/521,169 = 207,891.50/x
  3. Step 3: Cross multiply
    377,658.68x = 521,169 × 207,891.50
  4. Step 4: Simplify right side
    377,658.68x = 108,346,605,163.50
  5. Step 5: Solve for x
    x = 108,346,605,163.50/377,658.68
  6. Step 6: Final answer
    x = 286,890.28

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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.