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Finding the Fourth Proportional to 199,656.82, 299,385.30 and 66,490.66

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Solution

The fourth proportional to 199,656.82, 299,385.30 and 66,490.66 is: 99,702.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,656.82 : 299,385.30 = 66,490.66 : x
  2. Step 2: Convert to fraction form
    199,656.82/299,385.30 = 66,490.66/x
  3. Step 3: Cross multiply
    199,656.82x = 299,385.30 × 66,490.66
  4. Step 4: Simplify right side
    199,656.82x = 19,906,326,191.30
  5. Step 5: Solve for x
    x = 19,906,326,191.30/199,656.82
  6. Step 6: Final answer
    x = 99,702.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.