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Finding the Fourth Proportional to 492,505.23, 679,657.17 and 277,645.30

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Solution

The fourth proportional to 492,505.23, 679,657.17 and 277,645.30 is: 383,150.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,505.23 : 679,657.17 = 277,645.30 : x
  2. Step 2: Convert to fraction form
    492,505.23/679,657.17 = 277,645.30/x
  3. Step 3: Cross multiply
    492,505.23x = 679,657.17 × 277,645.30
  4. Step 4: Simplify right side
    492,505.23x = 188,703,618,861.80
  5. Step 5: Solve for x
    x = 188,703,618,861.80/492,505.23
  6. Step 6: Final answer
    x = 383,150.49

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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.