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Finding the Fourth Proportional to 401,476.78, 554,037.90 and 222,628.78

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Solution

The fourth proportional to 401,476.78, 554,037.90 and 222,628.78 is: 307,227.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,476.78 : 554,037.90 = 222,628.78 : x
  2. Step 2: Convert to fraction form
    401,476.78/554,037.90 = 222,628.78/x
  3. Step 3: Cross multiply
    401,476.78x = 554,037.90 × 222,628.78
  4. Step 4: Simplify right side
    401,476.78x = 123,344,781,750.76
  5. Step 5: Solve for x
    x = 123,344,781,750.76/401,476.78
  6. Step 6: Final answer
    x = 307,227.69

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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.