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Finding the Fourth Proportional to 279,736.28, 419,603.93 and 69,374.22

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Solution

The fourth proportional to 279,736.28, 419,603.93 and 69,374.22 is: 104,061.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,736.28 : 419,603.93 = 69,374.22 : x
  2. Step 2: Convert to fraction form
    279,736.28/419,603.93 = 69,374.22/x
  3. Step 3: Cross multiply
    279,736.28x = 419,603.93 × 69,374.22
  4. Step 4: Simplify right side
    279,736.28x = 29,109,695,352.68
  5. Step 5: Solve for x
    x = 29,109,695,352.68/279,736.28
  6. Step 6: Final answer
    x = 104,061.21

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1.5x scale

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.