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Finding the Fourth Proportional to 279,416.72, 419,207.88 and 161,172.92

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Solution

The fourth proportional to 279,416.72, 419,207.88 and 161,172.92 is: 241,807.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,416.72 : 419,207.88 = 161,172.92 : x
  2. Step 2: Convert to fraction form
    279,416.72/419,207.88 = 161,172.92/x
  3. Step 3: Cross multiply
    279,416.72x = 419,207.88 × 161,172.92
  4. Step 4: Simplify right side
    279,416.72x = 67,564,958,106.61
  5. Step 5: Solve for x
    x = 67,564,958,106.61/279,416.72
  6. Step 6: Final answer
    x = 241,807.14

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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.