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Finding the Fourth Proportional to 490,064.12, 676,285.80 and 275,222.96

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Solution

The fourth proportional to 490,064.12, 676,285.80 and 275,222.96 is: 379,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,064.12 : 676,285.80 = 275,222.96 : x
  2. Step 2: Convert to fraction form
    490,064.12/676,285.80 = 275,222.96/x
  3. Step 3: Cross multiply
    490,064.12x = 676,285.80 × 275,222.96
  4. Step 4: Simplify right side
    490,064.12x = 186,129,379,681.97
  5. Step 5: Solve for x
    x = 186,129,379,681.97/490,064.12
  6. Step 6: Final answer
    x = 379,806.18

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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.