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Finding the Fourth Proportional to 208,112.58, 287,195.62 and 112,619.28

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Solution

The fourth proportional to 208,112.58, 287,195.62 and 112,619.28 is: 155,414.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,112.58 : 287,195.62 = 112,619.28 : x
  2. Step 2: Convert to fraction form
    208,112.58/287,195.62 = 112,619.28/x
  3. Step 3: Cross multiply
    208,112.58x = 287,195.62 × 112,619.28
  4. Step 4: Simplify right side
    208,112.58x = 32,343,763,017.93
  5. Step 5: Solve for x
    x = 32,343,763,017.93/208,112.58
  6. Step 6: Final answer
    x = 155,414.74

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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.