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Finding the Fourth Proportional to 199,654.31, 299,381.57 and 66,488.15

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Solution

The fourth proportional to 199,654.31, 299,381.57 and 66,488.15 is: 99,698.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,654.31 : 299,381.57 = 66,488.15 : x
  2. Step 2: Convert to fraction form
    199,654.31/299,381.57 = 66,488.15/x
  3. Step 3: Cross multiply
    199,654.31x = 299,381.57 × 66,488.15
  4. Step 4: Simplify right side
    199,654.31x = 19,905,326,400.95
  5. Step 5: Solve for x
    x = 19,905,326,400.95/199,654.31
  6. Step 6: Final answer
    x = 99,698.96

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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.