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Finding the Fourth Proportional to 208,097.72, 287,175.62 and 112,604.42

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Solution

The fourth proportional to 208,097.72, 287,175.62 and 112,604.42 is: 155,394.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,097.72 : 287,175.62 = 112,604.42 : x
  2. Step 2: Convert to fraction form
    208,097.72/287,175.62 = 112,604.42/x
  3. Step 3: Cross multiply
    208,097.72x = 287,175.62 × 112,604.42
  4. Step 4: Simplify right side
    208,097.72x = 32,337,242,316.74
  5. Step 5: Solve for x
    x = 32,337,242,316.74/208,097.72
  6. Step 6: Final answer
    x = 155,394.51

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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.