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Finding the Fourth Proportional to 201,305.90, 301,996.95 and 66,377.72

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Solution

The fourth proportional to 201,305.90, 301,996.95 and 66,377.72 is: 99,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,305.90 : 301,996.95 = 66,377.72 : x
  2. Step 2: Convert to fraction form
    201,305.90/301,996.95 = 66,377.72/x
  3. Step 3: Cross multiply
    201,305.90x = 301,996.95 × 66,377.72
  4. Step 4: Simplify right side
    201,305.90x = 20,045,868,987.95
  5. Step 5: Solve for x
    x = 20,045,868,987.95/201,305.90
  6. Step 6: Final answer
    x = 99,579.14

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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.