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Finding the Fourth Proportional to 208,337.55, 287,504.42 and 117,722.85

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Solution

The fourth proportional to 208,337.55, 287,504.42 and 117,722.85 is: 162,456.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,337.55 : 287,504.42 = 117,722.85 : x
  2. Step 2: Convert to fraction form
    208,337.55/287,504.42 = 117,722.85/x
  3. Step 3: Cross multiply
    208,337.55x = 287,504.42 × 117,722.85
  4. Step 4: Simplify right side
    208,337.55x = 33,845,839,121.38
  5. Step 5: Solve for x
    x = 33,845,839,121.38/208,337.55
  6. Step 6: Final answer
    x = 162,456.74

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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.