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Finding the Fourth Proportional to 279,958.08, 419,740.23 and 130,039.20

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Solution

The fourth proportional to 279,958.08, 419,740.23 and 130,039.20 is: 194,967.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,958.08 : 419,740.23 = 130,039.20 : x
  2. Step 2: Convert to fraction form
    279,958.08/419,740.23 = 130,039.20/x
  3. Step 3: Cross multiply
    279,958.08x = 419,740.23 × 130,039.20
  4. Step 4: Simplify right side
    279,958.08x = 54,582,683,717.02
  5. Step 5: Solve for x
    x = 54,582,683,717.02/279,958.08
  6. Step 6: Final answer
    x = 194,967.35

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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.