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Finding the Fourth Proportional to 201,287.42, 301,870.84 and 66,326.50

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Solution

The fourth proportional to 201,287.42, 301,870.84 and 66,326.50 is: 99,469.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,287.42 : 301,870.84 = 66,326.50 : x
  2. Step 2: Convert to fraction form
    201,287.42/301,870.84 = 66,326.50/x
  3. Step 3: Cross multiply
    201,287.42x = 301,870.84 × 66,326.50
  4. Step 4: Simplify right side
    201,287.42x = 20,022,036,269.26
  5. Step 5: Solve for x
    x = 20,022,036,269.26/201,287.42
  6. Step 6: Final answer
    x = 99,469.88

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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.