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Finding the Fourth Proportional to 490,051.46, 676,271.08 and 275,191.68

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Solution

The fourth proportional to 490,051.46, 676,271.08 and 275,191.68 is: 379,764.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,051.46 : 676,271.08 = 275,191.68 : x
  2. Step 2: Convert to fraction form
    490,051.46/676,271.08 = 275,191.68/x
  3. Step 3: Cross multiply
    490,051.46x = 676,271.08 × 275,191.68
  4. Step 4: Simplify right side
    490,051.46x = 186,104,174,640.61
  5. Step 5: Solve for x
    x = 186,104,174,640.61/490,051.46
  6. Step 6: Final answer
    x = 379,764.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.