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Finding the Fourth Proportional to 321,881.31, 444,175.52 and 178,641.45

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Solution

The fourth proportional to 321,881.31, 444,175.52 and 178,641.45 is: 246,513.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,881.31 : 444,175.52 = 178,641.45 : x
  2. Step 2: Convert to fraction form
    321,881.31/444,175.52 = 178,641.45/x
  3. Step 3: Cross multiply
    321,881.31x = 444,175.52 × 178,641.45
  4. Step 4: Simplify right side
    321,881.31x = 79,348,158,054.10
  5. Step 5: Solve for x
    x = 79,348,158,054.10/321,881.31
  6. Step 6: Final answer
    x = 246,513.72

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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.