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Finding the Fourth Proportional to 377,906.55, 521,487.10 and 208,140.67

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Solution

The fourth proportional to 377,906.55, 521,487.10 and 208,140.67 is: 287,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,906.55 : 521,487.10 = 208,140.67 : x
  2. Step 2: Convert to fraction form
    377,906.55/521,487.10 = 208,140.67/x
  3. Step 3: Cross multiply
    377,906.55x = 521,487.10 × 208,140.67
  4. Step 4: Simplify right side
    377,906.55x = 108,542,674,390.36
  5. Step 5: Solve for x
    x = 108,542,674,390.36/377,906.55
  6. Step 6: Final answer
    x = 287,220.94

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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.