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Finding the Fourth Proportional to 208,114.62, 287,198.19 and 112,621.32

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Solution

The fourth proportional to 208,114.62, 287,198.19 and 112,621.32 is: 155,417.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,114.62 : 287,198.19 = 112,621.32 : x
  2. Step 2: Convert to fraction form
    208,114.62/287,198.19 = 112,621.32/x
  3. Step 3: Cross multiply
    208,114.62x = 287,198.19 × 112,621.32
  4. Step 4: Simplify right side
    208,114.62x = 32,344,639,259.41
  5. Step 5: Solve for x
    x = 32,344,639,259.41/208,114.62
  6. Step 6: Final answer
    x = 155,417.43

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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.