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Finding the Fourth Proportional to 275,499, 380,158.20 and 154,612.56

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Solution

The fourth proportional to 275,499, 380,158.20 and 154,612.56 is: 213,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,499 : 380,158.20 = 154,612.56 : x
  2. Step 2: Convert to fraction form
    275,499/380,158.20 = 154,612.56/x
  3. Step 3: Cross multiply
    275,499x = 380,158.20 × 154,612.56
  4. Step 4: Simplify right side
    275,499x = 58,777,232,506.99
  5. Step 5: Solve for x
    x = 58,777,232,506.99/275,499
  6. Step 6: Final answer
    x = 213,348.26

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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.