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Finding the Fourth Proportional to 208,369.12, 287,575.60 and 117,729.60

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Solution

The fourth proportional to 208,369.12, 287,575.60 and 117,729.60 is: 162,481.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,369.12 : 287,575.60 = 117,729.60 : x
  2. Step 2: Convert to fraction form
    208,369.12/287,575.60 = 117,729.60/x
  3. Step 3: Cross multiply
    208,369.12x = 287,575.60 × 117,729.60
  4. Step 4: Simplify right side
    208,369.12x = 33,856,160,357.76
  5. Step 5: Solve for x
    x = 33,856,160,357.76/208,369.12
  6. Step 6: Final answer
    x = 162,481.66

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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.