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Finding the Fourth Proportional to 377,878.70, 521,496.42 and 208,112.96

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Solution

The fourth proportional to 377,878.70, 521,496.42 and 208,112.96 is: 287,209.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,878.70 : 521,496.42 = 208,112.96 : x
  2. Step 2: Convert to fraction form
    377,878.70/521,496.42 = 208,112.96/x
  3. Step 3: Cross multiply
    377,878.70x = 521,496.42 × 208,112.96
  4. Step 4: Simplify right side
    377,878.70x = 108,530,163,595.60
  5. Step 5: Solve for x
    x = 108,530,163,595.60/377,878.70
  6. Step 6: Final answer
    x = 287,209.00

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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.