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Finding the Fourth Proportional to 560,012.80, 839,481.60 and 185,843.20

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Solution

The fourth proportional to 560,012.80, 839,481.60 and 185,843.20 is: 278,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,012.80 : 839,481.60 = 185,843.20 : x
  2. Step 2: Convert to fraction form
    560,012.80/839,481.60 = 185,843.20/x
  3. Step 3: Cross multiply
    560,012.80x = 839,481.60 × 185,843.20
  4. Step 4: Simplify right side
    560,012.80x = 156,011,946,885.12
  5. Step 5: Solve for x
    x = 156,011,946,885.12/560,012.80
  6. Step 6: Final answer
    x = 278,586.39

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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.