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Finding the Fourth Proportional to 279,354.75, 385,442.33 and 164,637.96

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Solution

The fourth proportional to 279,354.75, 385,442.33 and 164,637.96 is: 227,160.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,354.75 : 385,442.33 = 164,637.96 : x
  2. Step 2: Convert to fraction form
    279,354.75/385,442.33 = 164,637.96/x
  3. Step 3: Cross multiply
    279,354.75x = 385,442.33 × 164,637.96
  4. Step 4: Simplify right side
    279,354.75x = 63,458,438,085.66
  5. Step 5: Solve for x
    x = 63,458,438,085.66/279,354.75
  6. Step 6: Final answer
    x = 227,160.76

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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.