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Finding the Fourth Proportional to 321,054.51, 443,058.48 and 193,705.50

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Solution

The fourth proportional to 321,054.51, 443,058.48 and 193,705.50 is: 267,315.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,054.51 : 443,058.48 = 193,705.50 : x
  2. Step 2: Convert to fraction form
    321,054.51/443,058.48 = 193,705.50/x
  3. Step 3: Cross multiply
    321,054.51x = 443,058.48 × 193,705.50
  4. Step 4: Simplify right side
    321,054.51x = 85,822,864,397.64
  5. Step 5: Solve for x
    x = 85,822,864,397.64/321,054.51
  6. Step 6: Final answer
    x = 267,315.55

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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.