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Finding the Fourth Proportional to 279,412.39, 419,114.49 and 69,050.32

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Solution

The fourth proportional to 279,412.39, 419,114.49 and 69,050.32 is: 103,574.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,412.39 : 419,114.49 = 69,050.32 : x
  2. Step 2: Convert to fraction form
    279,412.39/419,114.49 = 69,050.32/x
  3. Step 3: Cross multiply
    279,412.39x = 419,114.49 × 69,050.32
  4. Step 4: Simplify right side
    279,412.39x = 28,939,989,651.14
  5. Step 5: Solve for x
    x = 28,939,989,651.14/279,412.39
  6. Step 6: Final answer
    x = 103,574.47

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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.