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Finding the Fourth Proportional to 253,000.80, 379,209.06 and 95,128.56

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Solution

The fourth proportional to 253,000.80, 379,209.06 and 95,128.56 is: 142,583.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,000.80 : 379,209.06 = 95,128.56 : x
  2. Step 2: Convert to fraction form
    253,000.80/379,209.06 = 95,128.56/x
  3. Step 3: Cross multiply
    253,000.80x = 379,209.06 × 95,128.56
  4. Step 4: Simplify right side
    253,000.80x = 36,073,611,816.75
  5. Step 5: Solve for x
    x = 36,073,611,816.75/253,000.80
  6. Step 6: Final answer
    x = 142,583.00

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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.