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Finding the Fourth Proportional to 275,635.88, 380,411.16 and 154,782.26

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Solution

The fourth proportional to 275,635.88, 380,411.16 and 154,782.26 is: 213,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,635.88 : 380,411.16 = 154,782.26 : x
  2. Step 2: Convert to fraction form
    275,635.88/380,411.16 = 154,782.26/x
  3. Step 3: Cross multiply
    275,635.88x = 380,411.16 × 154,782.26
  4. Step 4: Simplify right side
    275,635.88x = 58,880,899,074.02
  5. Step 5: Solve for x
    x = 58,880,899,074.02/275,635.88
  6. Step 6: Final answer
    x = 213,618.41

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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.