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Finding the Fourth Proportional to 279,148.77, 385,325.51 and 165,971.25

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Solution

The fourth proportional to 279,148.77, 385,325.51 and 165,971.25 is: 229,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,148.77 : 385,325.51 = 165,971.25 : x
  2. Step 2: Convert to fraction form
    279,148.77/385,325.51 = 165,971.25/x
  3. Step 3: Cross multiply
    279,148.77x = 385,325.51 × 165,971.25
  4. Step 4: Simplify right side
    279,148.77x = 63,952,955,721.73
  5. Step 5: Solve for x
    x = 63,952,955,721.73/279,148.77
  6. Step 6: Final answer
    x = 229,099.90

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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.