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Finding the Fourth Proportional to 401,870.25, 554,485.49 and 227,442.68

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Solution

The fourth proportional to 401,870.25, 554,485.49 and 227,442.68 is: 313,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,870.25 : 554,485.49 = 227,442.68 : x
  2. Step 2: Convert to fraction form
    401,870.25/554,485.49 = 227,442.68/x
  3. Step 3: Cross multiply
    401,870.25x = 554,485.49 × 227,442.68
  4. Step 4: Simplify right side
    401,870.25x = 126,113,667,688.45
  5. Step 5: Solve for x
    x = 126,113,667,688.45/401,870.25
  6. Step 6: Final answer
    x = 313,816.88

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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.