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Finding the Fourth Proportional to 449,235.71, 619,940.54 and 245,285.97

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Solution

The fourth proportional to 449,235.71, 619,940.54 and 245,285.97 is: 338,492.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,235.71 : 619,940.54 = 245,285.97 : x
  2. Step 2: Convert to fraction form
    449,235.71/619,940.54 = 245,285.97/x
  3. Step 3: Cross multiply
    449,235.71x = 619,940.54 × 245,285.97
  4. Step 4: Simplify right side
    449,235.71x = 152,062,715,469.79
  5. Step 5: Solve for x
    x = 152,062,715,469.79/449,235.71
  6. Step 6: Final answer
    x = 338,492.05

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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.