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Finding the Fourth Proportional to 401,471.13, 554,037.24 and 220,181.49

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Solution

The fourth proportional to 401,471.13, 554,037.24 and 220,181.49 is: 303,854.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,471.13 : 554,037.24 = 220,181.49 : x
  2. Step 2: Convert to fraction form
    401,471.13/554,037.24 = 220,181.49/x
  3. Step 3: Cross multiply
    401,471.13x = 554,037.24 × 220,181.49
  4. Step 4: Simplify right side
    401,471.13x = 121,988,745,018.69
  5. Step 5: Solve for x
    x = 121,988,745,018.69/401,471.13
  6. Step 6: Final answer
    x = 303,854.34

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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.