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Finding the Fourth Proportional to 206,844.60, 310,266.90 and 66,603.24

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Solution

The fourth proportional to 206,844.60, 310,266.90 and 66,603.24 is: 99,904.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,844.60 : 310,266.90 = 66,603.24 : x
  2. Step 2: Convert to fraction form
    206,844.60/310,266.90 = 66,603.24/x
  3. Step 3: Cross multiply
    206,844.60x = 310,266.90 × 66,603.24
  4. Step 4: Simplify right side
    206,844.60x = 20,664,780,804.76
  5. Step 5: Solve for x
    x = 20,664,780,804.76/206,844.60
  6. Step 6: Final answer
    x = 99,904.86

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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.