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Finding the Fourth Proportional to 377,881.63, 521,500.22 and 208,115.71

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Solution

The fourth proportional to 377,881.63, 521,500.22 and 208,115.71 is: 287,212.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,881.63 : 521,500.22 = 208,115.71 : x
  2. Step 2: Convert to fraction form
    377,881.63/521,500.22 = 208,115.71/x
  3. Step 3: Cross multiply
    377,881.63x = 521,500.22 × 208,115.71
  4. Step 4: Simplify right side
    377,881.63x = 108,532,388,550.46
  5. Step 5: Solve for x
    x = 108,532,388,550.46/377,881.63
  6. Step 6: Final answer
    x = 287,212.66

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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.