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Finding the Fourth Proportional to 462,661.56, 638,439.44 and 255,921.21

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Solution

The fourth proportional to 462,661.56, 638,439.44 and 255,921.21 is: 353,152.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,661.56 : 638,439.44 = 255,921.21 : x
  2. Step 2: Convert to fraction form
    462,661.56/638,439.44 = 255,921.21/x
  3. Step 3: Cross multiply
    462,661.56x = 638,439.44 × 255,921.21
  4. Step 4: Simplify right side
    462,661.56x = 163,390,192,716.92
  5. Step 5: Solve for x
    x = 163,390,192,716.92/462,661.56
  6. Step 6: Final answer
    x = 353,152.73

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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.