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Finding the Fourth Proportional to 208,454.01, 287,560.89 and 131,844.09

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Solution

The fourth proportional to 208,454.01, 287,560.89 and 131,844.09 is: 181,878.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,454.01 : 287,560.89 = 131,844.09 : x
  2. Step 2: Convert to fraction form
    208,454.01/287,560.89 = 131,844.09/x
  3. Step 3: Cross multiply
    208,454.01x = 287,560.89 × 131,844.09
  4. Step 4: Simplify right side
    208,454.01x = 37,913,203,861.64
  5. Step 5: Solve for x
    x = 37,913,203,861.64/208,454.01
  6. Step 6: Final answer
    x = 181,878.03

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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.