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Finding the Fourth Proportional to 253,744.50, 380,622.92 and 85,267.26

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Solution

The fourth proportional to 253,744.50, 380,622.92 and 85,267.26 is: 127,902.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,744.50 : 380,622.92 = 85,267.26 : x
  2. Step 2: Convert to fraction form
    253,744.50/380,622.92 = 85,267.26/x
  3. Step 3: Cross multiply
    253,744.50x = 380,622.92 × 85,267.26
  4. Step 4: Simplify right side
    253,744.50x = 32,454,673,055.26
  5. Step 5: Solve for x
    x = 32,454,673,055.26/253,744.50
  6. Step 6: Final answer
    x = 127,902.96

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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.