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Finding the Fourth Proportional to 377,405.28, 520,819.26 and 207,635.76

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Solution

The fourth proportional to 377,405.28, 520,819.26 and 207,635.76 is: 286,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,405.28 : 520,819.26 = 207,635.76 : x
  2. Step 2: Convert to fraction form
    377,405.28/520,819.26 = 207,635.76/x
  3. Step 3: Cross multiply
    377,405.28x = 520,819.26 × 207,635.76
  4. Step 4: Simplify right side
    377,405.28x = 108,140,702,872.74
  5. Step 5: Solve for x
    x = 108,140,702,872.74/377,405.28
  6. Step 6: Final answer
    x = 286,537.33

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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.