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Finding the Fourth Proportional to 377,902.55, 521,481.59 and 208,136.67

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Solution

The fourth proportional to 377,902.55, 521,481.59 and 208,136.67 is: 287,215.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,902.55 : 521,481.59 = 208,136.67 : x
  2. Step 2: Convert to fraction form
    377,902.55/521,481.59 = 208,136.67/x
  3. Step 3: Cross multiply
    377,902.55x = 521,481.59 × 208,136.67
  4. Step 4: Simplify right side
    377,902.55x = 108,539,440,568.22
  5. Step 5: Solve for x
    x = 108,539,440,568.22/377,902.55
  6. Step 6: Final answer
    x = 287,215.43

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1.5x scale

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.