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Finding the Fourth Proportional to 252,990.39, 379,485.21 and 66,001.89

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Solution

The fourth proportional to 252,990.39, 379,485.21 and 66,001.89 is: 99,002.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,990.39 : 379,485.21 = 66,001.89 : x
  2. Step 2: Convert to fraction form
    252,990.39/379,485.21 = 66,001.89/x
  3. Step 3: Cross multiply
    252,990.39x = 379,485.21 × 66,001.89
  4. Step 4: Simplify right side
    252,990.39x = 25,046,741,087.05
  5. Step 5: Solve for x
    x = 25,046,741,087.05/252,990.39
  6. Step 6: Final answer
    x = 99,002.74

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1.5x scale

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.