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Finding the Fourth Proportional to 279,164.40, 418,746.60 and 110,724.90

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Solution

The fourth proportional to 279,164.40, 418,746.60 and 110,724.90 is: 166,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,164.40 : 418,746.60 = 110,724.90 : x
  2. Step 2: Convert to fraction form
    279,164.40/418,746.60 = 110,724.90/x
  3. Step 3: Cross multiply
    279,164.40x = 418,746.60 × 110,724.90
  4. Step 4: Simplify right side
    279,164.40x = 46,365,675,410.34
  5. Step 5: Solve for x
    x = 46,365,675,410.34/279,164.40
  6. Step 6: Final answer
    x = 166,087.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.