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Finding the Fourth Proportional to 208,065.44, 287,130.20 and 117,440.42

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Solution

The fourth proportional to 208,065.44, 287,130.20 and 117,440.42 is: 162,067.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,065.44 : 287,130.20 = 117,440.42 : x
  2. Step 2: Convert to fraction form
    208,065.44/287,130.20 = 117,440.42/x
  3. Step 3: Cross multiply
    208,065.44x = 287,130.20 × 117,440.42
  4. Step 4: Simplify right side
    208,065.44x = 33,720,691,282.68
  5. Step 5: Solve for x
    x = 33,720,691,282.68/208,065.44
  6. Step 6: Final answer
    x = 162,067.72

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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.