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Finding the Fourth Proportional to 275,736.80, 413,702.40 and 266,016.80

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Solution

The fourth proportional to 275,736.80, 413,702.40 and 266,016.80 is: 399,118.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,736.80 : 413,702.40 = 266,016.80 : x
  2. Step 2: Convert to fraction form
    275,736.80/413,702.40 = 266,016.80/x
  3. Step 3: Cross multiply
    275,736.80x = 413,702.40 × 266,016.80
  4. Step 4: Simplify right side
    275,736.80x = 110,051,788,600.32
  5. Step 5: Solve for x
    x = 110,051,788,600.32/275,736.80
  6. Step 6: Final answer
    x = 399,118.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.