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Finding the Fourth Proportional to 275,586.22, 380,279.64 and 154,740.70

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Solution

The fourth proportional to 275,586.22, 380,279.64 and 154,740.70 is: 213,525.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,586.22 : 380,279.64 = 154,740.70 : x
  2. Step 2: Convert to fraction form
    275,586.22/380,279.64 = 154,740.70/x
  3. Step 3: Cross multiply
    275,586.22x = 380,279.64 × 154,740.70
  4. Step 4: Simplify right side
    275,586.22x = 58,844,737,689.35
  5. Step 5: Solve for x
    x = 58,844,737,689.35/275,586.22
  6. Step 6: Final answer
    x = 213,525.69

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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.