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Finding the Fourth Proportional to 279,707.45, 386,043.08 and 165,014.55

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Solution

The fourth proportional to 279,707.45, 386,043.08 and 165,014.55 is: 227,747.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,707.45 : 386,043.08 = 165,014.55 : x
  2. Step 2: Convert to fraction form
    279,707.45/386,043.08 = 165,014.55/x
  3. Step 3: Cross multiply
    279,707.45x = 386,043.08 × 165,014.55
  4. Step 4: Simplify right side
    279,707.45x = 63,702,724,301.74
  5. Step 5: Solve for x
    x = 63,702,724,301.74/279,707.45
  6. Step 6: Final answer
    x = 227,747.69

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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.