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Finding the Fourth Proportional to 279,424.10, 419,136.15 and 101,872.10

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Solution

The fourth proportional to 279,424.10, 419,136.15 and 101,872.10 is: 152,808.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,424.10 : 419,136.15 = 101,872.10 : x
  2. Step 2: Convert to fraction form
    279,424.10/419,136.15 = 101,872.10/x
  3. Step 3: Cross multiply
    279,424.10x = 419,136.15 × 101,872.10
  4. Step 4: Simplify right side
    279,424.10x = 42,698,279,786.42
  5. Step 5: Solve for x
    x = 42,698,279,786.42/279,424.10
  6. Step 6: Final answer
    x = 152,808.15

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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.