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Finding the Fourth Proportional to 275,803.47, 380,606.49 and 154,942.17

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Solution

The fourth proportional to 275,803.47, 380,606.49 and 154,942.17 is: 213,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,803.47 : 380,606.49 = 154,942.17 : x
  2. Step 2: Convert to fraction form
    275,803.47/380,606.49 = 154,942.17/x
  3. Step 3: Cross multiply
    275,803.47x = 380,606.49 × 154,942.17
  4. Step 4: Simplify right side
    275,803.47x = 58,971,995,476.68
  5. Step 5: Solve for x
    x = 58,971,995,476.68/275,803.47
  6. Step 6: Final answer
    x = 213,818.90

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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.