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Finding the Fourth Proportional to 208,236.88, 287,372.10 and 127,708.80

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Solution

The fourth proportional to 208,236.88, 287,372.10 and 127,708.80 is: 176,241.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,236.88 : 287,372.10 = 127,708.80 : x
  2. Step 2: Convert to fraction form
    208,236.88/287,372.10 = 127,708.80/x
  3. Step 3: Cross multiply
    208,236.88x = 287,372.10 × 127,708.80
  4. Step 4: Simplify right side
    208,236.88x = 36,699,947,062.21
  5. Step 5: Solve for x
    x = 36,699,947,062.21/208,236.88
  6. Step 6: Final answer
    x = 176,241.35

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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.