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Finding the Fourth Proportional to 275,949, 380,809.98 and 156,717

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Solution

The fourth proportional to 275,949, 380,809.98 and 156,717 is: 216,269.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,949 : 380,809.98 = 156,717 : x
  2. Step 2: Convert to fraction form
    275,949/380,809.98 = 156,717/x
  3. Step 3: Cross multiply
    275,949x = 380,809.98 × 156,717
  4. Step 4: Simplify right side
    275,949x = 59,679,397,635.66
  5. Step 5: Solve for x
    x = 59,679,397,635.66/275,949
  6. Step 6: Final answer
    x = 216,269.66

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1.5x scale

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.