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Finding the Fourth Proportional to 377,863.66, 521,445.55 and 208,113.58

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Solution

The fourth proportional to 377,863.66, 521,445.55 and 208,113.58 is: 287,193.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,863.66 : 521,445.55 = 208,113.58 : x
  2. Step 2: Convert to fraction form
    377,863.66/521,445.55 = 208,113.58/x
  3. Step 3: Cross multiply
    377,863.66x = 521,445.55 × 208,113.58
  4. Step 4: Simplify right side
    377,863.66x = 108,519,900,185.57
  5. Step 5: Solve for x
    x = 108,519,900,185.57/377,863.66
  6. Step 6: Final answer
    x = 287,193.27

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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.