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Finding the Fourth Proportional to 208,372.90, 287,553.90 and 112,879.48

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Solution

The fourth proportional to 208,372.90, 287,553.90 and 112,879.48 is: 155,773.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,372.90 : 287,553.90 = 112,879.48 : x
  2. Step 2: Convert to fraction form
    208,372.90/287,553.90 = 112,879.48/x
  3. Step 3: Cross multiply
    208,372.90x = 287,553.90 × 112,879.48
  4. Step 4: Simplify right side
    208,372.90x = 32,458,934,703.97
  5. Step 5: Solve for x
    x = 32,458,934,703.97/208,372.90
  6. Step 6: Final answer
    x = 155,773.30

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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.